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`UNITED STATES DISTRICT COURT
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`NORTHERN DISTRICT OF CALIFORNIA
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`SAN JOSE DIVISION
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`LIFESCAN, INC. and LIFESCAN SCOTLAND, )
`LTD.,
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`SHASTA TECHNOLOGIES, LLC,
`INSTACARE CORP., PHARMATECH
`SOLUTIONS, INC., and CONDUCTIVE
`TECHNOLOGIES, INC.,
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`Case No.: 5:11-CV-04494-EJD
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`ORDER GRANTING PLAINTIFFS’
`MOTION FOR PRELIMINARY
`INJUNCTION; DENYING
`DEFENDANTS’ MOTION TO
`DISMISS
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`[Re: Docket Nos. 174, 176]
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`Plaintiffs,
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`Defendants.
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`This action arises out of Defendants Shasta Technologies, LLC (“Shasta”), Instacare Corp.
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`(“Instacare”), Pharmatech Solutions, Inc. (“Pharmatech”), and Conductive Technologies, Inc.’s
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`(“Conductive”) (collectively, “Defendants”) development and sale of GenStrips: blood glucose test
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`strips intended for use in Plaintiffs’ LifeScan, Inc. and LifeScan Scotland, Ltd.’s (collectively,
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`“Plaintiffs”) OneTouch Ultra test meter. Plaintiffs allege that Defendants’ test strips infringe their
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`U.S. Patent Nos. 6,241,862 (“the ’862 patent”) and 5,708,247 (“the ’247 patent”) and that
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`Defendants indirectly infringe Plaintiffs’ U.S. Patent No. 7,250,105 (“the ’105 patent”). The court
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`previously stayed this action as to the ’862 and ’247 patents. Dkt. No. 245.
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`Presently before the court is Plaintiffs’ Motion for Preliminary Injunction (Dkt. No. 176)
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`and Defendants’ Motion to Dismiss as to Count 3 of the First Amended Complaint (Dkt. No. 174).
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`The court held a hearing on Plaintiffs’ Motion for Preliminary Injunction on February 21, 2013 and
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`took Defendants’ Motion to Dismiss under submission. Having reviewed the parties’ briefing and
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`Case No.: 5:11-CV-04494-EJD
`ORDER GRANTING PLAINTIFFS’ MOTION FOR PRELIMINARY INJUNCTION; DENYING
`DEFENDANTS’ MOTION TO DISMISS
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`For the Northern District of California
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`United States District Court
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`LIFESCAN SCOTLAND LTD. EXHIBIT 2003
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`Case5:11-cv-04494-EJD Document246 Filed03/19/13 Page2 of 30
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`heard the parties’ arguments, the court GRANTS Plaintiffs’ Motion for Preliminary Injunction and
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`DENIES Defendants’ Motion to Dismiss for the reasons set forth below.
`1.
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`TECHNOLOGY BACKGROUND
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`The parties are competitors in the blood glucose monitoring systems industry. Since 2000,
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`Plaintiffs have marketed and sold the OneTouch Ultra System, a glucose monitoring system used
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`by patients with diabetes. See Pl. Mtn. for Prelim. Inj. 3-4, Dkt. No. 176; Def. Opp. 2; Dkt. No.
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`203. Plaintiffs are the market leader in glucose monitoring systems, and generate approximately $1
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`billion in sales annually. Dkt. No. 203 at 2. The system is composed of both a meter and
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`disposable test strips. Dkt. No. 176 at 3. To use the system, a patient places a disposable test strip
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`in the meter, draws a small drop of blood using a lancet, and places the blood on the test strip. Dkt.
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`No. 176 at 3-4. The meter then determines the glucose level in the blood by measuring the
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`electrical current produced when an electrochemical reaction is triggered in the strip by the
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`glucose. Id. at 4.
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`Plaintiffs’ competitive advantage appears to be in its DoubleSure Technology, which is the
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`subject of the ’105 patent. Id. DoubleSure Technology is a method designed to improve the
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`reliability and accuracy of glucose measurements. Id. It uses a self-testing strip design, using
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`multiple sensors in a downstream configuration. Id. at 6. Figure 2 depicts the test strip design:
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`A drop of blood applied to the top of the test strip flows downstream by capillary action.
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`Id. The test strip has two working sensors (6b and 8b), with one sensor downstream from the
`2
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`Case No.: 5:11-CV-04494-EJD
`ORDER GRANTING PLAINTIFFS’ MOTION FOR PRELIMINARY INJUNCTION; DENYING
`DEFENDANTS’ MOTION TO DISMISS
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`For the Northern District of California
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`Case5:11-cv-04494-EJD Document246 Filed03/19/13 Page3 of 30
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`other. Id. This design ensures that the first sensor is completely covered in blood before the
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`second sensor is reached, allowing for more accurate results. Id. The currents are measured at
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`each sensor, and if the values are within a pre-determined range of one another, the reading is
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`accurate. Id. If the difference in values is outside of the acceptable range, the reading may not be
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`accurate and the test strip can be discarded. Id. at 6-7.
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`Defendants’ GenStrips are nearly identical to Plaintiffs’ test strips, and are designed
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`specifically to work with the OneTouch Ultra meter. See id. at 5. GenStrips received FDA
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`approval in January of this year, but are not approved for use in any device other than the
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`OneTouch Ultra meter. Id. While GenStrips have not been on the market for the majority of this
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`litigation, Defendants confirmed at the preliminary injunction hearing that their product is now
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`available for purchase. Prelim. Inj. Hr’g Tr. (Rough) 80:20-21 (Feb. 21, 2013).
`2. PLAINTIFFS’ MOTION FOR PRELIMINARY INJUNCTION
`2.1 Legal Standard
`Because this motion for preliminary injunction arises in the context of a patent infringement
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`action, the court will apply Federal Circuit law. See Hybritech Inc. v. Abbott Labs., 849 F.2d
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`1446, 1450, n. 12 (Fed. Cir. 1988). The Federal Circuit requires the court to consider four factors
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`of “universal applicability” in determining whether a grant of a preliminary injunction is
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`appropriate: (1) reasonable likelihood of success on the merits; (2) irreparable harm; (3) the
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`balance of hardships tips in the plaintiff’s favor; and (4) the injunction is in the public interest.
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`Titan Tire Corp. v. Case New Holland, Inc., 566 F.3d 1372, 1375-76 (Fed. Cir. 2009) (citing
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`Winter v. Natural Res. Def. Council, Inc., 555 U.S. 7 (2008)). Each of these four factors must be
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`weighed and assessed against the others and against the form and magnitude of the relief requested.
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`Hybritech, 849 F.2d at 1451.
`2.2 Likelihood of Success on the Merits
`In a patent infringement case, “reasonable likelihood of success on the merits” means that a
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`patentee must show (1) it will likely prove infringement; and (2) its infringement claim will likely
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`withstand challenges to the patent’s validity and enforceability. Purdue Pharma L.P. v. Boehringer
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`Case No.: 5:11-CV-04494-EJD
`ORDER GRANTING PLAINTIFFS’ MOTION FOR PRELIMINARY INJUNCTION; DENYING
`DEFENDANTS’ MOTION TO DISMISS
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`For the Northern District of California
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`United States District Court
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`Case5:11-cv-04494-EJD Document246 Filed03/19/13 Page4 of 30
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`Ingelheim Gmbh, 237 F.3d 1359, 1363 (Fed. Cir. 2001). Even at this stage, the court must
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`consider the evidence in light of the presumptions and burdens that will apply at trial. Titan Tire,
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`566 F.3d at 1376.
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`A patent is presumed valid at trial. 35 U.S.C. § 282. Thus, the alleged infringer bears the
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`burden of proving an affirmative defense of invalidity by clear and convincing evidence. Titan
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`Tire, 566 F.3d at 1376. If the accused infringer successfully meets its burden, the plaintiff then
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`must come forward with contrary evidence sufficient to overcome the accused infringer’s showing.
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`Id. At the preliminary injunction stage, a patent is also presumed to be valid. Similarly, the
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`accused infringer bears the burden to present evidence of invalidity. However, unlike at trial, the
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`accused infringer need only raise a “substantial question” regarding validity. Sciele Pharma Inc. v.
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`Lupin Ltd., 684 F.3d 1253, 1263 (Fed. Cir. 2012); Abbot Labs. v. Sandoz, Inc., 544 F.3d 1341,
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`1364 (Fed. Cir. 2008); Amazon.com, Inc. v. Barnesandnoble.com, Inc., 239 F.3d 1343, 1359 (Fed.
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`Cir. 2001) (finding that the defendants’ burden to raise a “substantial question” did not equate to
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`the “clear and convincing” standard required at trial, but instead could be met by showing
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`“vulnerability”). Notwithstanding the accused infringer’s duty to bring forward evidence of
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`invalidity, the ultimate burden remains on the plaintiff to show that the alleged infringer’s defense
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`“lacks substantial merit,” and that plaintiff is likely to succeed at trial despite the validity
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`challenge. Titan Tire, 566 F.3d at 1377 (quoting New England Braiding Co. v. A.W. Chesterton
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`Co., 970 F.2d 878, 883 (Fed. Cir. 1992)). In determining the likelihood of success on the validity
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`issue, the court must “weigh the evidence both for and against validity that is available at this
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`preliminary injunction stage…[t]hen…if the [court] concludes there is a ‘substantial question’
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`concerning the validity of the patent, meaning that the alleged infringer has presented an invalidity
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`defense that the patentee has not shown lacks substantial merit, it necessarily follows that the
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`patentee has not succeeded in showing it is likely to succeed at trial on the merits of the validity
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`issue.” Id.
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`Case No.: 5:11-CV-04494-EJD
`ORDER GRANTING PLAINTIFFS’ MOTION FOR PRELIMINARY INJUNCTION; DENYING
`DEFENDANTS’ MOTION TO DISMISS
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`Case5:11-cv-04494-EJD Document246 Filed03/19/13 Page5 of 30
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`2.2.1 Patent Exhaustion
`Before reaching the issues of infringement and invalidity, the court must first consider
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`whether Plaintiffs are likely to show that the ’105 patent has not been exhausted. “The declared
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`purpose of the patent law is to promote the progress of science and the useful arts by granting to
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`the inventor a limited monopoly, the exercise of which will enable him to secure the financial
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`rewards for his invention.” Univis Lens Co. v. United States, 316 U.S. 241, 250 (1942) (citing
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`U.S. Const. Art. I, § 8, cl. 8). To strike the proper balance between the public’s interest in
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`innovation and an inventor’s need for remuneration, the law extends to patentees a monopoly for a
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`limited period of time, during which the patentee maintains the exclusive “right to make, use, and
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`sell” the invention. See Bauer & Cie v. O’Donnell, 229 U.S. 1, 10 (1913). However, that
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`monopoly is not unlimited. Once a patentee sells the patented invention in whole or, under certain
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`circumstances, in part, the monopoly is exhausted. Univis, 316 U.S. at 249. This principle of
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`patent exhaustion is also called the first sale doctrine. See Static Control Components, Inc. v.
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`Lexmark Int’l Inc., 615 F.Supp.2d 575, 578 (E.D. Ky. 2009).
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`As the Supreme Court recently articulated, the first sale doctrine provides that “the initial
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`authorized sale of a patented item terminates all patent rights to that item.” Quanta Comp., Inc. v.
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`LG Electronics, Inc., 553 U.S. 617, 625 (2008). In operation, the doctrine “prohibits patent
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`holders from selling a patented article and then ‘invoking patent law to control postsale use of the
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`article.’” Excelstor Tech., Inc. v. Papst Licensing GmbH & Co. KG, 541 F.3d 1373, 1376 (Fed.
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`Cir. 2008) (citing Quanta, 553 U.S. at 638). Because application of the doctrine extinguishes a
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`patentee’s monopoly right over the patented item, “[e]xhaustion is triggered only by a sale
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`authorized by the patent holder.” Quanta, 553 U.S. at 636.
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`The parties dispute whether an “authorized sale” has occurred such that the ’105 patent
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`could be deemed exhausted. Plaintiffs first distribute their OneTouch Ultra products either by (1)
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`having doctors distribute a free OneTouch Ultra kit, comprised of a meter and 10 test strips, to
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`diabetic patients, or (2) selling the OneTouch Ultra meter alone at a reduced price. Defendants
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`contend that under either distribution scheme, Plaintiffs have transferred ownership of their
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`Case No.: 5:11-CV-04494-EJD
`ORDER GRANTING PLAINTIFFS’ MOTION FOR PRELIMINARY INJUNCTION; DENYING
`DEFENDANTS’ MOTION TO DISMISS
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`Case5:11-cv-04494-EJD Document246 Filed03/19/13 Page6 of 30
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`patented invention, thus extinguishing their right to control consumers’ use of the product.
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`Plaintiffs, however, contend that because they have not received their “reward” for the free kits and
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`because the meter alone does not “substantially embody” the inventive aspects of the ’105 patent,
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`exhaustion cannot apply.
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`2.2.1.1 Free Distribution of OneTouch Ultra Kits
`First, the court must consider whether distributing a patented article for free constitutes an
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`“authorized sale.” Plaintiffs argue that their free distribution scheme cannot trigger the first sale
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`doctrine because they have not received their “reward” for the patented article. Defendant
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`contends that a free distribution triggers the first sale doctrine because it is the transfer of
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`ownership, not the adequacy of Plaintiff’s remuneration, which creates an “authorized sale.”
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`The question presented by the parties—whether it is the transfer of title and ownership or
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`rather the purchase and sale of a patented article that triggers the first sale doctrine—has not been
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`directly addressed by courts of higher authority. In most cases, courts need not consider this
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`distinction because the transfer of ownership is typically accomplished through a traditional sale or
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`licensing agreement. However, in a case such as this where the patented article primarily enters the
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`stream of commerce through a free distribution system, the distinction is a crucial one that must be
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`examined.
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`In 1859, the Supreme Court considered the question of whether patent exhaustion applied
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`during an extended patent term. Chaffee v. The Boston Belting Co., 63 U.S. 217 (1859). In doing
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`so, the Court reiterated the principles of patent exhaustion, holding that
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`[w]hen the patented machine rightfully passes to the hands of the purchaser from the
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`patentee, or from any other person by him authorized to convey it, the machine is no longer
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`within the limits of the monopoly…By a valid sale and purchase, the patented machine
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`becomes the private individual property of the purchaser, and is no longer protected by the
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`laws of the United States, but by the laws of the State in which it is situated.
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`Id. at 223.
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`However, the court went on to declare that
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`Case No.: 5:11-CV-04494-EJD
`ORDER GRANTING PLAINTIFFS’ MOTION FOR PRELIMINARY INJUNCTION; DENYING
`DEFENDANTS’ MOTION TO DISMISS
`
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`For the Northern District of California
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`Case5:11-cv-04494-EJD Document246 Filed03/19/13 Page7 of 30
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`it is obvious[] that if a person legally acquires a title to that which is the subject of letters
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`patent, he may continue to use it…as he pleases, in the same manner as if dealing with
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`property of any other kind.”
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`Id.
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`Because the record did not reflect that the defendants had legally licensed the machine at issue, the
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`Court found them to be “naked infringers” who could not be saved by the principles of patent
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`exhaustion. Id. at 224.
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`The language used by the Chafee Court in describing the point at which “the machine is no
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`longer within the limits of the monopoly” would seem to support either party’s argument in the
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`present case. On the one hand, the Court looked to a “valid sale and purchase” to trigger
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`exhaustion, whereas on the other, the Court pointed to a person’s “legally acquir[ing] a title” as the
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`exhaustive moment. A close reading of the opinion would seem to suggest that the way in which a
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`person would “legally acquire[] title” would be through a “valid sale and purchase;” however, the
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`Court did not so explicitly state the principle, leaving the door open for arguments such as
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`Defendants’ here.
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`As the Supreme Court’s exhaustion jurisprudence evolved, the Court did not directly
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`address the difference between a “valid sale and purchase” and “legally acquir[ing] a title;”
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`however, the distinctions it has drawn in other areas prove useful to the analysis. In Univis, the
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`Court considered the question of whether the first sale doctrine applied when the patentee, a lens
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`company, sold its patented lens blanks to a wholesaler, who then was required to grind the blanks
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`down to finish them using a standard process cited in the patentee’s method patents. 316 U.S. 241
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`(1942). Because the lens blanks themselves “embodie[d] essential features of [the] patented
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`invention” the court determined that their sale also embodied the “reward” to which the patentee
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`was entitled. 316 U.S. at 251. The Court explained that “the purpose of the patent law is fulfilled
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`with respect to any particular article when the patentee has received his reward for the use of his
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`invention by the sale of the article” and that beyond that sale, the patentee had no further right to
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`control use of the article. Id.
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`Case No.: 5:11-CV-04494-EJD
`ORDER GRANTING PLAINTIFFS’ MOTION FOR PRELIMINARY INJUNCTION; DENYING
`DEFENDANTS’ MOTION TO DISMISS
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`On its face, the Univis opinion suggests that it is a traditional sale of a patented invention
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`that triggers exhaustion. However, the same day the Court issued its Univis decision, it also issued
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`an order in United States v. Masonite Corp., which steered the exhaustion inquiry away from a
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`focus on traditional sales. 316 U.S. 265 (1942). According to the Masonite Court, the form of the
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`sale of the patented article has no impact on the application of exhaustion; rather, the test simply is
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`“whether or not there has been such a disposition of the article that it may fairly be said that the
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`patentee has received his reward for the use of the article.” 316 U.S. at 278 (finding exhaustion
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`where patentee “disposed” of the patented product to a del credere agent with which patentee had
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`“no intimate relationship” and with whom patentee competed, because the arrangement, without
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`more, enlarged the patentee’s privilege to fix prices in violation of the Sherman Act). The inquiry
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`thus shifted from whether a “valid sale and purchase” had occurred to whether the patentee had
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`received his “reward” in any form. After Univis and Masonite, the Court did not develop the
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`“reward” inquiry further. Nor did it address any major patent exhaustion issue until 2008, when it
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`issued its opinion in Quanta. In that case, which will be discussed in detail in the following
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`section, the Court acknowledged that an “authorized sale” was required to trigger the first sale
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`doctrine, but did not address the issue of reward in any substantial detail.
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`In the years since Univis, the Federal Circuit has shed some light on what forms of
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`“reward” trigger exhaustion. In 1993, the court considered the question of whether a licensed
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`seller of a patented product must own the patent rights to that product in order for there to be a sale
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`sufficient to trigger exhaustion. Intel Corp. v. ULSI Sys. Tech., Inc., 995 F.2d 1556, 1569-70 (Fed.
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`Cir. 1993). In holding that the patentee-assignee’s rights terminated with the sale of the patented
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`product by a licensee acting within the scope of its license, the court noted that
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`[w]hile Intel may not in retrospect be pleased with the deal that it made permitting HP to
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`make unrestricted sales, it nevertheless granted HP that right in 1983, presumably for
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`consideration it believed to be of value at that time. It cannot now renege on that grant to
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`avoid its consequences.
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`Id. at 1569.
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`Case No.: 5:11-CV-04494-EJD
`ORDER GRANTING PLAINTIFFS’ MOTION FOR PRELIMINARY INJUNCTION; DENYING
`DEFENDANTS’ MOTION TO DISMISS
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`Later, in TransCore, LP v. Electronic Transaction Consultants Corp., the court found that a
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`settlement agreement containing a broad covenant not to sue for future infringement constituted an
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`“authorized sale” for purposes of patent exhaustion under Quanta. 563 F.3d 1271, 1276-77 (Fed.
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`Cir. 2009). In that case, the plaintiff had received $4.5 million from a competitor in exchange for
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`an unconditional covenant not to sue and a release of all existing claims. When the plaintiff later
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`sued a customer of the competitor for infringement, the Federal Circuit upheld the district court’s
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`finding that the plaintiff’s patents had been exhausted by the settlement agreement.
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`More recently, the court has examined the issue in the context of patented seeds. In
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`Monsanto Co. v. Bowman, the court found that patent exhaustion may apply to the original seeds
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`sold, but not to any subsequent generation of those seeds after they have been planted. 657 F.3d
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`1341, 1347-48 (Fed. Cir. 2011), cert granted 133 S. Ct. 420 (Oct. 5, 2012). In so finding, the court
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`explained that the subsequent generation of seeds constitutes a “newly infringing article” for which
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`the patentee had not received a reward. Id.
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`The common theme running through this line of cases is consideration. In each case where
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`exhaustion has been found, the transfer of ownership of the patented article was accomplished by
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`some bargained-for exchange: a traditional sale, as in Univis; a licensing agreement, as in Intel; the
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`disposition of an article with a competitor in exchange for higher sale prices, as in Masonite; or a
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`covenant not to sue in exchange for a cash settlement, as in TransCore. In contrast, exhaustion has
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`not been found when the patentee has not received any consideration in exchange for the patented
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`article, as with the second generation seeds in Monsanto.
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`In this case, when Plaintiffs distribute their OneTouch Ultra kits for free, they receive no
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`remuneration at the moment they part with their patented invention. Rather, Plaintiffs distribute
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`the kits in consideration of patients’ anticipated future repeat purchases of Plaintiffs’ disposable
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`test strips. Thus, at the moment of disposition, Plaintiffs have not received their reward for their
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`invention. At the hearing, Defendants argued that Plaintiffs receive their reward for the ’105
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`invention within two months of the free distribution of the meters. Hr’g Tr. (Rough) 88:21-24.
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`Such argument belies any suggestion by Defendants that Plaintiffs receive their reward when they
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`Case No.: 5:11-CV-04494-EJD
`ORDER GRANTING PLAINTIFFS’ MOTION FOR PRELIMINARY INJUNCTION; DENYING
`DEFENDANTS’ MOTION TO DISMISS
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`9
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`For the Northern District of California
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`United States District Court
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`distributes the kits for free—i.e., the parties essentially agree that the “reward” comes in Plaintiffs’
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`repeated sale of disposable test strips to diabetic patients. Because the Supreme Court and the
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`Federal Circuit have emphasized that a patentee’s receiving of some reward for his or her invention
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`triggers exhaustion, and because Plaintiffs here do not receive any reward at the time of
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`distribution, Plaintiffs can likely show that patent exhaustion is not triggered by the free
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`distribution of its OneTouch Ultra kits.
`2.2.1.2 Plaintiffs’ Sale of Meters Alone at a Reduced Price
`Having determined that the free distribution of OneTouch Ultra kits likely does not trigger
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`patent exhaustion, the court must now consider whether the sale of the OneTouch Ultra meter alone
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`at a reduced price is sufficient to exhaust the ’105 patent. The ’105 patent is a method patent that
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`requires both a meter and a test strip for an individual to practice it. As such, the sale of the meter
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`by itself does not necessarily convey the entire invention of the ’105 patent to the purchaser,
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`casting the applicability of exhaustion into doubt.
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`The Supreme Court recently addressed the application of patent exhaustion to method
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`patents in Quanta. In that case, LGE licensed its computer technology patents to Intel, authorizing
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`Intel to manufacture and sell microprocessors and chipsets under the patents. In a separate
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`agreement, LGE required Intel to provide its customers with a written notice that the license
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`between LGE and Intel did not extend to any product made by combining an Intel product with a
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`non-Intel product. Quanta purchased microprocessors and chipsets from Intel and placed them in
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`computers manufactured with non-Intel parts. LGE sued Quanta, asserting that the combination
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`infringed its patents. See Quanta, 553 U.S. at 623-24.
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`The district court found, and the Federal Circuit affirmed, that patent exhaustion did not
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`apply to method patents and thus that LGE could assert its patent rights against Quanta. See LG
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`Elec., Inc. v. Bizcom Elec., Inc., 453 F.3d 1364, 1370 (Fed. Cir. 2006). The Supreme Court
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`reversed, holding that patent exhaustion does in fact apply to method patents, including the patents
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`at issue in the case. 553 U.S. at 628, 638. In so holding, the Court made clear that when a
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`component of a patented system is sold but is required to be combined with additional components
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`Case No.: 5:11-CV-04494-EJD
`ORDER GRANTING PLAINTIFFS’ MOTION FOR PRELIMINARY INJUNCTION; DENYING
`DEFENDANTS’ MOTION TO DISMISS
`
`10
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`For the Northern District of California
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`United States District Court
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`Case5:11-cv-04494-EJD Document246 Filed03/19/13 Page11 of 30
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`after the sale in order to fully practice the patented method, the sale of the component only triggers
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`patent exhaustion when the component “substantially embod[ies]” the patents-in-suit. 553 U.S. at
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`621, 633. According to the Quanta Court, an item “substantially embodies” the patent when it
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`covers the “essential, or inventive, feature” of the patent and when the item’s only reasonable and
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`intended use is to practice the patent. Id. at 632-33.
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`In Quanta, LGE’s patents were found to be exhausted because “[e]verything inventive
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`about each patent [was] embodied in the Intel Products” and “the only step necessary to practice
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`the patent [was] the application of common processes or the addition of standard parts.” 553 U.S. at
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`633. In making this determination, the Court relied on its prior reasoning in Univis, which found
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`exhaustion in part because the item sold “embodie[d] essential features of [the] patented invention”
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`whereas the finishing process required to practice the patent was a standard process barely
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`mentioned in the patents-in-suit and thus only “incidental to the invention.” 553 U.S. at 632-33
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`(quoting Univis, 316 U.S. at 250-51). Similarly here, to determine whether the ’105 patent has
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`been exhausted by the sale of Plaintiffs’ OneTouch Ultra Meter alone, the court must determine
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`whether that meter embodies the “inventive” feature of the ’105 patent, and whether the OneTouch
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`Ultra test strips constitute anything more than “standard parts.”
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`The ’105 patent specification describes what the inventor perceived as a problem in the art
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`relating to the accuracy of blood glucose measuring devices: inaccurate readings caused by
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`insufficient blood coverage of the working sensor part or by manufacturing defects. ’105 patent
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`1:39-41; 55-58. By teaching two identical working sensor parts configured in such a way to ensure
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`that the first sensor is completely covered in blood before the second sensor is reached, the ’105
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`patent allows for the measurements from the two sensors to be compared. If the results from the
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`two sensors are too disparate, the ’105 patent teaches that an error code should appear alerting the
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`user to discard the test strip and try again. See ’105 patent, 2:27-30. In this way, the ’105 patent’s
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`invention is self-testing for accuracy. This solution addresses the problem the inventor identified
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`in the art while still keeping the cost of the disposable test strip low. Id. at 1:21-22, 32-38.
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`Case No.: 5:11-CV-04494-EJD
`ORDER GRANTING PLAINTIFFS’ MOTION FOR PRELIMINARY INJUNCTION; DENYING
`DEFENDANTS’ MOTION TO DISMISS
`
`11
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`For the Northern District of California
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`United States District Court
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`Case5:11-cv-04494-EJD Document246 Filed03/19/13 Page12 of 30
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`The specification and claims make clear that at the very least both a measuring device and
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`two working sensor parts are required to practice the invention. Particularly, Claim 1 calls for:
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`a measuring device said device comprising:
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`a first working sensor part for generating charge carriers in proportion to the
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` concentration of said substance in the sample liquid;
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`a second working sensor part downstream from said first working sensor part also
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` for generating charge carriers in proportion to the concentration of said substance
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` in the sample liquid wherein said first and second working sensor parts are
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` arranged such that, in the absence of an error condition, the quantity of said charge
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` carriers generated by said first working sensors part are substantially identical to
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`the quantity of said charge carriers generated by said second working sensor part;
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`and
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`a reference sensor part upstream from said first and second working sensor parts
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` which reference sensor part is a common reference for both the first and second
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` working sensor parts, said reference sensor part and said first and second working
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` sensor parts being arranged such that the sample liquid is constrained to flow
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` substantially unidirectionally across said reference sensor part and said first and
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` second working sensor parts; wherein said first and second working sensor parts
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` and said reference sensor part are provided on a disposable test strip
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`(’105 patent 6:55-711)
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`i.e., the two working sensor parts, as well as:
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`applying the sample liquid to said measuring device;
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`measuring an electric current at each working sensor part proportional to the concentration
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` of said substance in the sample liquid;
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`comparing the electric current from each of the working sensor parts to establish a
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` difference parameter; and
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`giving an indication of an error if said difference parameter is greater than a predetermined
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`Case No.: 5:11-CV-04494-EJD
`ORDER GRANTING PLAINTIFFS’ MOTION FOR PRELIMINARY INJUNCTION; DENYING
`DEFENDANTS’ MOTION TO DISMISS
`
`12
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`For the Northern District of California
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`United States District Court
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`Case5:11-cv-04494-EJD Document246 Filed03/19/13 Page13 of 30
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` threshold.
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`(’105 patent 7:12-8:5)
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`i.e., a measuring device—here, a meter.
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`In allowing the ’105 patent to issue, the patent examiner highlighted the differences in
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`Plaintiffs’ working sensor parts from the sensors present in the prior art. The examiner noted that,
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`unlike the prior art, Plaintiffs’ two working sensors were identical in size and composition,
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`allowing