UNITED STATES PATENT AND TRADEMARK OFFICE
`
`BEFORE THE PATENT TRIAL AND APPEAL BOARD
`
`_________________
`
`COOLIT SYSTEMS, INC.
`
`Petitioner,
`
`v.
`
`ASETEK DANMARK A/S,
`
`Patent Owner
`
`_________________
`
`Case No. IPR2021-01196
`U.S. Patent 10,599,196
`_________________
`
`Title: COOLING SYSTEM FOR A COMPUTER SYSTEM
`
`PETITION FOR INTER PARTES REVIEW
`
`ACTIVE 57253128
`
`

`

`U.S. Patent No. 10,599,196
`IPR2021-01196
`
`
`
`
`Petition Requesting Inter Partes Review
`
`TABLE OF CONTENTS
`INITIAL STATEMENT ................................................................................. 1 
`
`I. 
`
`A. 
`B. 
`
`Asetek Did Not Invent the “All-in-One” Cooler ................................. 1 
`The ’196 Patent Claims Are Very Similar to Claims for Which
`IPRs Have Been Instituted. .................................................................. 2 
`SPECIFIC GROUNDS FOR PETITION ....................................................... 3 
`
`II. 
`III.  OVERVIEW OF THE ’196 PATENT ........................................................... 3 
`Embodiments Claimed in Challenged Claims ..................................... 4 
`Priority Date ......................................................................................... 8 
`The Relevant Prosecution History of the ’196 Patent .......................... 8 
`
`A. 
`B. 
`C. 
`PERSON OF ORDINARY SKILL IN THE ART (“POSITA”) .................... 9 
`
`CLAIM CONSTRUCTION ......................................................................... 10 
`
`IV. 
`
`V. 
`
`F. 
`G. 
`
`A. 
`B. 
`C. 
`D. 
`E. 
`
`“reservoir” .......................................................................................... 10 
`“chamber” ........................................................................................... 10 
`“double-sided chassis” ....................................................................... 10 
`“stator” ................................................................................................ 11 
`“either a first end or a second end of the thermal exchange
`chamber” ............................................................................................ 11 
`“an inlet … positioned below a center of the impeller” ..................... 12 
`“wherein the first passage is configured to direct the cooling
`liquid from the outlet of the pump chamber into the thermal
`exchange chamber between a first end and a second end of the
`thermal exchanger chamber” .............................................................. 14 
`H.  Other Terms ........................................................................................ 15 
`VI.  OVERVIEW OF PRIOR ART ..................................................................... 16 
`Duan (Ex-1004) .................................................................................. 16 
`A. 
`Duan-1 (Ex-1005) ............................................................................... 16 
`B. 
`C.  Wu (Ex-1006) ..................................................................................... 16 
`D.  Admitted Prior Art (“APA”) .............................................................. 17
`
`
`
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`
`ii
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`U.S. Patent No. 10,599,196
`IPR2021-01196
`
`VII.  CLAIM ELEMENT NUMBERING KEY ................................................... 18 
`Independent Claims 1, 10 and 16 ....................................................... 18 
`Dependent Claims 2-9, 11-15 and 17-19 ........................................... 19 
`
`A. 
`B. 
`VIII.  THE CHALLENGED CLAIMS ARE INVALID ........................................ 20 
`GROUND 1: Duan Renders Claims 1-4, 6, 7, 9, 16, 17, and 19
`Obvious. ............................................................................................. 20 
`Claim 1 ..................................................................................... 21 
`(a)  Claim Element [1-PRE] ................................................. 21 
`(b)  Claim Element [1a] ........................................................ 21 
`(c)  Claim Element [1b] ....................................................... 25 
`(d)  Claim Element [1c] ........................................................ 30 
`(e)  Claim Element [1d] ....................................................... 32 
`(f) 
`Claim Element [1e] ........................................................ 36 
`(g)  Claim Element [1f] ........................................................ 41 
`(h)  Claim Element [1g] ....................................................... 45 
`(i) 
`Claim Element [1h] ....................................................... 48 
`Claim 2 ..................................................................................... 50 
`Claim 3 ..................................................................................... 54 
`Claim 4 ..................................................................................... 56 
`Claim 6 ..................................................................................... 56 
`Claim 7 ..................................................................................... 60 
`Claim 9 ..................................................................................... 62 
`Claim 16 ................................................................................... 64 
`Claims 17 and 19...................................................................... 64 
`GROUND 2: Duan in View of Wu Renders Claims 4, 5, 8, 10-
`15, and 18 Obvious. ............................................................................ 65 
`Claim 4 ..................................................................................... 65 
`Claim 5 ..................................................................................... 66 
`Claim 8 ..................................................................................... 67 
`Claim 10 ................................................................................... 68 
`Claim 11 ................................................................................... 70 
`Claim 12 ................................................................................... 70 
`Claim 13 ................................................................................... 70 
`iii
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`Petition Requesting Inter Partes Review
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` 
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` 
` 
` 
` 
` 
` 
` 
`
` 
` 
` 
` 
` 
` 
` 
`
`A. 
`
`B. 
`
`
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`

`

`U.S. Patent No. 10,599,196
`IPR2021-01196
`
`
`
`
`Petition Requesting Inter Partes Review
`
`Claim 14 ................................................................................... 70 
`Claim 15 ................................................................................... 70 
`  Claim 18 ................................................................................... 71 
`  Motivation/Rationale to combine Duan and Wu ..................... 71 
`GROUND 3: Duan in View of APA Renders Claims 5, 8, 10-
`15, and 18 Obvious. ............................................................................ 72 
`Claim 5 ..................................................................................... 73 
` 
`Claim 8 ..................................................................................... 75 
` 
`Claim 10 ................................................................................... 76 
` 
`Claim 11 ................................................................................... 77 
` 
`Claim 12 ................................................................................... 77 
` 
`Claim 13 ................................................................................... 77 
` 
`Claim 14 ................................................................................... 77 
` 
`Claim 15 ................................................................................... 78 
` 
`Claim 18 ................................................................................... 78 
` 
`D.  GROUND 4: The Combination of Duan and Duan-1 Renders
`Claims 5, 10-13, 15 and 18 Obvious. ................................................. 78 
`Claim 5 ..................................................................................... 78 
` 
`Claim 10 ................................................................................... 82 
` 
`Claim 11 ................................................................................... 83 
` 
`Claim 12 ................................................................................... 83 
` 
`Claim 13 ................................................................................... 83 
` 
`Claim 15 ................................................................................... 83 
` 
`Claim 18 ................................................................................... 84 
` 
`  Motivation/Rationale to combine Duan and Duan-1 ............... 84 
`GROUND 5: Duan in View of APA and Further in view of Wu
`Renders Claim 12 Obvious. ............................................................... 85 
`Claim 12 ................................................................................... 85 
`GROUND 6: Duan in View of Duan-1 and Further in view of
`Wu Renders Claims 12 and 14 Obvious. ........................................... 86 
`Claim 12 ................................................................................... 86 
`Claim 14 ................................................................................... 86 
`
`C. 
`
`E. 
`
`F. 
`
` 
` 
`
` 
`
` 
` 
`
`
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`iv
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`U.S. Patent No. 10,599,196
`IPR2021-01196
`
`IX. 
`
`FINTIV FACTORS FAVOR INSTITUTION ............................................. 87 
`
`
`
`Petition Requesting Inter Partes Review
`
`SECONDARY CONSIDERATIONS .......................................................... 93 
`
`A. 
`B. 
`
`A. 
`B. 
`C. 
`
`X. 
`XI.  REQUIREMENTS FOR IPR UNDER 37 C.F.R. §42.104 .......................... 93 
`Grounds for Standing Under 37 C.F.R. §42.104(a) ........................... 93 
`Identification of Challenge Under 37 C.F.R. §42.104(b) and
`Relief Requested ................................................................................. 93 
`XII.  PAYMENT OF FEES UNDER 37 C.F.R. §42.15 ....................................... 94 
`XIII.  CONCLUSION ............................................................................................. 94 
`XIV.  MANDATORY NOTICES UNDER 37 C.F.R. §42.8(A)(1) FOR
`INTER PARTES REVIEW ............................................................................ 94 
`Real Party in Interest Under 37 C.F.R. §42.8(b)(1) ........................... 94 
`Related Matters Under 37 C.F.R. §42.8(b)(2) ................................... 95 
`Lead and Backup Counsel Under 37 C.F.R. §42.8(b)(3) and
`Service Information under 37 C.F.R. §42.8(b)(4) .............................. 95 
`CERTIFICATION OF WORD COUNT UNDER 37 C.F.R. §42.24(D) ............... 97 
`CERTIFICATE OF SERVICE ............................................................................... 98 
`
`
`
`
`
`v
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`

`

`U.S. Patent No. 10,599,196
`IPR2021-01196
`
`
`TABLE OF AUTHORITIES
`
`
`
`Petition Requesting Inter Partes Review
`
` Page(s)
`
`Federal Cases
`Apple Inc. v. Fintiv, Inc.,
`IPR2020-00019, Paper 11 (P.T.A.B. Mar. 20, 2020) ......................................... 86
`Apple Inc. v. Seven Networks, LLC,
`IPR2020- 00156, Paper 10, at 11 (P.T.A.B. June 15, 2020) .............................. 88
`In re Cohen,
`767 Fed. Appx. 985 (Fed. Cir. 2019) .................................................................... 9
`Intuitive Surgical, Inc. v. Ethicon LLC,
`IPR2018-01703, Paper 7 (P.T.A.B. Feb. 19, 2019) ............................................ 89
`PharmaStem Therapeutics, Inc. v. ViaCell, Inc.,
`491 F.3d 1342 (Fed. Cir. 2007) ............................................................................ 9
`Sand Revolution II, LLC v. Continental Intermodal Group–Trucking
`LLC,
`IPR2019-01393, Paper 24 (P.T.A.B. Jun. 16, 2020) .......................................... 88
`Snap, Inc. v. SRK Tech. LLC,
`IPR2020-00820, Paper 15 (P.T.A.B. Oct. 21, 2020) .............................. 88, 89, 90
`Sotera Wireless, Inc. v. Masimo Corp.,
`IPR2020-00912, Paper 15 (P.T.A.B. Nov. 25, 2020) ......................................... 88
`Taiwan Semiconductor Mfg. Co., Ltd. v. Fraunhofer Gesellschaft Zur
`Foerderung Der Angewandten Forschung Ev,
`IPR2020-01669, Paper 13 (P.T.A.B. Apr. 15, 2021) ......................................... 91
`Tide Int’l (USA), Inc. v. UPL NA Inc.,
`IPR2020-01113, Paper 12 (P.T.A.B. Jan. 22, 2021) .......................................... 89
`Tokai Corp. v. Easton Enters., Inc.,
`632 F.3d 1358 (Fed. Cir. 2011) .......................................................................... 92
`Federal Statutes
`35 U.S.C. §102(a) .................................................................................................... 17
`35 U.S.C. §102(b) .................................................................................................... 17
`35 U.S.C. §102(e) .............................................................................................. 16, 17
`vi
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`

`

`
`
`Petition Requesting Inter Partes Review
`
`U.S. Patent No. 10,599,196
`IPR2021-01196
`
`35 U.S.C. §314 ......................................................................................................... 87
`35 U.S.C. §315(b) .................................................................................................... 88
`Regulations
`37 C.F.R. § 42.15(a) ................................................................................................. 94
`37 C.F.R. §42.24(a)(1)(i) ......................................................................................... 97
`
`
`
`
`
`
`
`vii
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`

`

`U.S. Patent No. 10,599,196
`IPR2021-01196
`
`
`
`
`Petition Requesting Inter Partes Review
`
`TABLE OF EXHIBITS
`
`Exhibit
`1001
`
`Description
`U.S. Patent No. 10,599,196 (“’196 patent”)
`
`1002
`
`1003
`
`1004
`
`1005
`
`1006
`
`1007
`
`1008
`
`1009
`
`1010
`
`1011
`
`1012
`
`File history of U.S. Patent No. 10,599,196 (“’196
`FH”)
`
`Declaration of Himanshu Pokharna, Ph.D. Regarding
`Invalidity of U.S. Patent No. 10,599,196
`
`U.S. Patent App. Pub. No. 2006/0185830 to Qiang-
`Fei Duan et al. (“Duan”)
`
`U.S. Patent No. 7,325,591 to Qiang-Fei Duan et al.
`(“Duan-1”)
`
`U.S. Patent No. 6,894,899 to Wu et al. (“Wu”)
`
`Institution Decision in IPR2020-00522 (Paper 9)
`entered August 24, 2020
`
`Institution Decision in IPR2020-00524 (Paper 9)
`entered August 24, 2020
`
`U.S. Patent No. 10,078,355 (“’355 patent”)
`
`U.S. Patent No. 9,733,681 (“’681 patent”)
`
`Claim Construction Order, filed on July 22, 2020 in
`Asetek Danmark A/S v. CoolIT Systems, Inc., No.
`3:19-cv-00410-EMC (N.D. Cal.)
`
`Joint Supplemental Claim Construction and Pre-
`Hearing Statement Under Patent L.R. 4-3, filed on
`March 19, 2021 in Asetek Danmark A/S v. CoolIT
`Systems, Inc., No. 3:19-cv-00410-EMC (N.D. Cal.)
`
`
`
`viii
`
`

`

`U.S. Patent No. 10,599,196
`IPR2021-01196
`
`
`
`
`Petition Requesting Inter Partes Review
`
`Exhibit
`1013
`
`1014
`
`1015
`
`1016
`
`1017
`
`1018
`
`1019
`
`1020
`
`1021
`
`
`
`
`
`Description
`Asetek’s Third Amended Disclosure of Asserted
`Claims and Infringement Contentions Relating to
`U.S. Patent Nos. 8,240,362; 10,078,354; 10,078,355;
`10,613,601; and 10,599,601, served February 5, 2021
`in Asetek Danmark A/S v. CoolIT Systems, Inc.,
`Corsair Gaming, Inc., and Corsair Memory, Inc., No.
`3:19-cv-00410-EMC (N.D. Cal.)
`
`Transcript of December 22, 2020 Hearing in Asetek
`Danmark A/S v. CoolIT Systems, Inc., Corsair
`Gaming, Inc., and Corsair Memory, Inc., No. 3:19-
`cv-00410-EMC (N.D. Cal.)
`
`Transcript of May 18, 2021 Hearing in Asetek
`Danmark A/S v. CoolIT Systems, Inc., Corsair
`Gaming, Inc., and Corsair Memory, Inc., No. 3:19-
`cv-00410-EMC (N.D. Cal.)
`
`Disclaimer in Patent Under 37 CFR 1.231(a)
`(disclaiming claims 8-16 of the ’681 patent)
`
`File history of U.S. Patent App. Pub. No.
`2006/0185830 to Qiang-Fei Duan et al. (“Duan FH”)
`
`First Amended Complaint for Patent Infringement,
`filed on January 22, 2021 in Asetek Danmark A/S v.
`CoolIT Systems, Inc., Corsair Gaming, Inc., and
`Corsair memory, Inc., No. 3:19-cv-00410-EMC
`(N.D. Cal.) (“Amended Complaint”)
`
`File history of U.S. Patent App. No. 16/796,086 to
`Eriksen
`
`Patent Owner’s Response in IPR2019-00524 (Paper
`21)
`
`Patent Owner’s Response in IPR2019-00522 (Paper
`23)
`
`ix
`
`

`

`U.S. Patent No. 10,599,196
`IPR2021-01196
`
`
`
`
`Petition Requesting Inter Partes Review
`
`CoolIT Systems, Inc. (“Petitioner”) hereby seeks inter partes review of
`
`Claims 1-19 (the “Challenged Claims”) of U.S. Patent No. 10,599,196. (Ex-1001
`
`(the “’196 patent”).) This Petition is supported by the declaration of Dr. Himanshu
`
`Pokharna, an engineer holding a Ph.D. in Nuclear Energy Engineering from Purdue
`
`University and a Bachelor of Technology and a Master of Technology in mechanical
`
`engineering from the Indian Institute of Technology. Dr. Pokharna has over 25 years
`
`of experience in a variety of leadership roles, and his educational, research, and work
`
`experience has revolved primarily around energy, materials, and thermal
`
`technologies with a major thrust being liquid cooling in various contexts.
`
`(Ex-1003, ¶¶1-6.)
`
`I.
`
`INITIAL STATEMENT
`A. Asetek Did Not Invent the “All-in-One” Cooler
`The ’196 patent discloses a liquid cooling system used in a computer system.
`
`The use of liquid cooling to cool semiconductor chips in computer systems was
`
`generally known to a person of ordinary skill in the art (“POSITA”) long before the
`
`claimed May 6, 2005 priority date of the ’196 patent claims. (Ex-1001, 1:4-12;
`
`Ex-1003, ¶27.) The use of closed liquid cooling loops that utilize what is sometimes
`
`referred to in the industry as an “all-in-one” cooler (i.e., a modular pumping
`
`mechanism, what Patent Owner calls a “reservoir” in the ’196 patent, that pumps the
`
`liquid through the loop) was also generally known to a POSITA long before the
`
`-1-
`
`

`

`U.S. Patent No. 10,599,196
`IPR2021-01196
`
`claimed priority date. (Id.; see also Ex-1004, Duan; Ex-1005, Duan-1.) The ’196
`
`Petition Requesting Inter Partes Review
`
`
`
`patent only discloses and claims a specific embodiment of such known “all-in-one”
`
`coolers. (Ex-1003, ¶27.)
`
`B. The ’196 Patent Claims Are Very Similar to Claims for Which IPRs
`Have Been Instituted.
`The ’196 patent (Ex-1001) at issue in this Petition is a direct continuation of
`
`U.S. Patent No. 10,078,355 (Ex-1009 (the “’355 patent”)). (Ex-1001, 1:4-5
`
`(“continuation of U.S. application Ser. No. 15/626,706”); Ex-1009 (the ’355 patent),
`
`at p. 1 (“(21) Appl. No.: 15/626, 706”).) The ’355 patent is a direct continuation of
`
`U.S. Patent No. 9,733,681 (Ex-1010 (the “’681 patent”)). (Ex-1001, 1:5-7.) Both
`
`the ’355 and ’681 patents are subject to pending IPRs that have been instituted. (See
`
`Ex-1007 and Ex-1008 (Institution Decisions in IPR2020-00522 and IPR2020-
`
`00524, respectively).). The IPR relating to the ’355 patent is instructive given that
`
`the Challenged Claims of the ’196 patent are very similar to claims in the ’355 patent
`
`for which the Board determined Petitioner is likely to prevail. (See Ex-1007,
`
`at 14-18 (Board finding that Petitioner likely to prevail regarding anticipation of
`
`claims 10, 11 and 13 of the ’355 patent); compare, e.g., Ex-1001 claims 1, 2, 6, 10
`
`and 13 with Ex-1009 claims 10, 11 and 13). The same is true with respect to the IPR
`
`relating to the ’681 patent. (See Ex-1008, at 26-30 (Board finding that Petitioner
`
`likely to prevail regarding invalidity of claims 8, 11, 15 and 16 of the ’681 patent);
`
`
`
`2
`
`

`

`U.S. Patent No. 10,599,196
`IPR2021-01196
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`compare, e.g., Ex-1001 claims 1, 2, 6, 10 and 13 with Ex-1010, claims 8, 11,
`
`Petition Requesting Inter Partes Review
`
`
`
`15, and 16; see Ex-1003, ¶48).
`
`II.
`
`SPECIFIC GROUNDS FOR PETITION
`Petitioner respectfully requests that the Challenged Claims of the ’196 patent
`
`(Ex-1001) be cancelled based on the following grounds of unpatentability:
`
`Ground of
`Unpatentability
`
`Ground 1
`
`Ground 2
`
`’196 Patent Claim(s)
`
`Basis for Rejection under
`35 U.S.C. §103
`
`1-4, 6, 7, 9, 16, 17, 19
`
`Rendered obvious over Duan
`
`4, 5, 8, 10-15, 18
`
`Rendered obvious over Duan
`in view of Wu
`
`Rendered obvious over Duan
`in view of admitted prior art
`
`Rendered obvious over Duan
`in view of Duan-1
`
`Rendered obvious over Duan
`in view of admitted prior art
`and further in view of Wu
`
`Rendered obvious over Duan
`in view of Duan-1 and
`further in view of Wu
`
`Ground 3
`
`5, 8, 10-15, 18
`
`Ground 4
`
`5, 10-13, 15, 18
`
`Ground 5
`
`12
`
`Ground 6
`
`12, 14
`
`III. OVERVIEW OF THE ’196 PATENT
`The ’196 patent relates to a liquid-cooling system for a computer system. The
`
`specification purports to disclose embodiments of a liquid-cooling system that are
`
`more efficient, easier to use, and more compact with integrated components than
`
`
`
`3
`
`

`

`U.S. Patent No. 10,599,196
`IPR2021-01196
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`prior art cooling systems. (Ex-1001, 1:15-2:27.) The ’196 patent explains that it
`
`Petition Requesting Inter Partes Review
`
`
`
`provides an “integrate element” to limit the number of separate elements and an
`
`“entire pump [that] is placed inside the reservoir” or placed “outside the reservoir in
`
`the immediate vicinity of the reservoir.” (Id., 2:20-21 and 2:28-34.) The ’196 patent
`
`further states (and subsequently claims) that these purported improvements may be
`
`achieved by having an integrated element comprising the heat exchange interface,
`
`the reservoir of cooling liquid, and the pump for pumping the cooling liquid. (Id.,
`
`1:57-2:39; claims 1-19.) But as shown in detail in this Petition, the Challenged
`
`Claims of the ’196 patent are not inventive. (Ex-1003, ¶28.)
`
`A.
`Embodiments Claimed in Challenged Claims
`The figures discussed below capture the main characteristics of the purported
`
`invention claimed in the Challenged Claims. (Ex-1003, ¶¶29-33.)
`
`
`
`4
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`
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`

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`U.S. Patent No. 10,599,196
`IPR2021-01196
`
`
`“FIG. 8
`
`[which
`
`
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`Petition Requesting Inter Partes Review
`
`should have been FIG. 7,1
`
`reproduced and annotated
`
`at right] is a perspective
`
`view of
`
`the cooling
`
`system
`
`showing
`
`the
`
`reservoir housing 14 with
`
`the
`
`heat
`
`exchanging
`
`surface (not shown) and
`
`the pump (not shown)
`
`inside the reservoir. The
`
`tube inlet connection and
`
`the tube outlet connection are connected to a heat radiator by means of connecting
`
`tubes 24 and 25 through which the cooling liquid flows into and out of the reservoir
`
`and the heat radiator, respectively.” (Ex-1001, 16:18-32; Ex-1003, ¶30.)
`
`
`1 A POSITA would have understood the figure numbers of FIG. 7 and FIG. 8 in the
`
`patent’s description are transposed. The description for FIG. 8 is actually for FIG. 7,
`
`and the description for FIG. 7 is actually for FIG. 8. (Ex-1003, ¶30.)
`
`
`
`5
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`

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`U.S. Patent No. 10,599,196
`IPR2021-01196
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`
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`Petition Requesting Inter Partes Review
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`The internal structures of the claimed reservoir 14 are depicted in FIGS. 17
`
`and 20, reproduced below-right. “FIG. 17 shows a preferred possible embodiment
`
`of a reservoir according to the invention. The reservoir housing 14, as shown in
`
`FIGS. 17 and 20, is in the form of a double-sided chassis configured to mount an
`
`electrical motor.” (Ex-1001, 21:52-56.)
`
`“The reservoir housing
`
`14 has a recess 40 in the centre
`
`on
`
`the upper side of
`
`the
`
`reservoir. The recess 40 is
`
`intended for accommodating a
`
`stator 37 of an electrical motor
`
`driving an impeller 33 of the
`
`pump, said
`
`impeller being
`
`attached to a shaft 38 of a rotor
`
`39 of the electrical motor . . .
`
`Thereby,
`
`a
`
`liquid-proof
`
`division is made between the
`
`rotor 39 of the motor, said
`
`rotor 39 being placed inside
`
`the interior of the jacket 44 and
`
`
`
`6
`
`Recess 40
`
`Jacket 44
`
`

`

`U.S. Patent No. 10,599,196
`IPR2021-01196
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`being submerged in the cooling liquid, and the stator 37 of the pump, said stator 37
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`Petition Requesting Inter Partes Review
`
`
`
`being positioned in the recess 40 and surrounding the exterior of the jacket 44.”
`
`(Ex-1001, 22:1-14.)
`
`“The reservoir housing 14 may … be provided with a [tube] inlet [connection]
`
`(not shown [in FIGS. 17 or 20]) and a [tube] outlet [connection] (not shown [in FIGS.
`
`17 or 20]) for the cooling liquid. … The [tube] inlet [connection] and the [tube]
`
`outlet [connection] lead to a radiator (not shown [in FIGS. 17 or 20]) intended for
`
`cooling the cooling liquid after having been heated by the processing unit via a heat
`
`exchanging surface[.]” (Id., 22:35-42.) A POSITA would have understood that the
`
`resulting system, if having the inlet tube connection and the outlet tube connection
`
`with the fan and the radiator, looks like the example shown on the below-right. (Id.,
`
`22:35-67.) The cycle of the
`
`cooling liquid flows can start at
`
`the radiator 11. The cooling
`
`liquid, already cooled by fan 10
`
`and radiator 11, flows from the
`
`radiator 11 into the reservoir 14
`
`through connecting
`
`tube 24,
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`flows to the inlet of the pump
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`chamber 46 and gets sucked up
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`by the impeller 33 through the inlet on impeller cover 46A, gets spun to the
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`Petition Requesting Inter Partes Review
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`circumference of pump chamber 46, flows downward to thermal exchange chamber
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`47A via first passage 48, flows through the thermal exchange chamber 47A, flows
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`out of the thermal exchange chamber 47A via second passage 49 and into connecting
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`tube 25, and then finally flows back to the radiator 11 and fan 10 to get cooled, and
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`the cycle repeats. (Ex-1003, ¶¶29-33.)
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`B.
`Priority Date
`The ’196 patent issued on March 24, 2020, from Application No. 15/991,384
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`filed on May 29, 2018, and claims the benefit of Application No. 11/919,974, filed
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`as application No. PCT/DK2005/000310 on May 6, 2005. Petitioner does not
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`concede that the ’196 patent is entitled to an effective filing date of May 6, 2005 but
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`assumes that this date applies for purposes of this Petition.
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`C.
`The Relevant Prosecution History of the ’196 Patent
`On July 8, 2019, the Examiner issued a non-statutory double patenting
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`rejection of all pending claims based on: (a) U.S. Patent No. 9,733,681 (the “’681
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`patent”) in view of Barnes; and (b) U.S. Patent No. 10,078,355 (the “’355 patent”)
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`in view of Barnes. (Ex-1002, pp. 221-226.) In rejecting the claims based on the ’681
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`patent, the Examiner stated:
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`“Regarding claim 10, ’681 also discloses mounting legs to secure the
`heat-exchanging interface to a heat generating component of a
`computer (claim 10 of ’681), but does not disclose a set of four
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`Petition Requesting Inter Partes Review
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`mounting legs, however, the use of four legs would have involve a mere
`duplication of the essential working parts of a device which is generally
`recognized as being within the level of ordinary skill in the art when the
`device will still carry out its intended tasks with the arrangement.”
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`(Ex-1002, p. 224). On July 16, 2019, Patent Owner filed a Terminal Disclaimer to
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`obviate the double patenting rejections. (Id., pp. 208, 209, 211.) In the Reply filed
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`with the Terminal Disclaimer, the Patent Owner did not make any substantive
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`arguments in response to the double-patenting rejection. (Id., pp. 218-220;
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`Ex-1003, ¶34.)
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`IV. PERSON OF ORDINARY SKILL IN THE ART (“POSITA”)
`A POSITA working in the field of the ’196 patent (liquid cooling systems for
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`computer systems) as of the earliest possible effective filing date of May 6, 2005
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`would have earned at least a bachelor’s degree, such as a B.S. (bachelor of science),
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`or equivalent thereof, in mechanical engineering or a closely-related field and
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`possessed at least three years of specialized experience in heat transfer devices for
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`thermal management in electronics and computer systems, or in similar systems. A
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`person with less education but more relevant practical experience, depending on the
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`nature of that experience and degree of exposure to liquid cooling systems for
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`computer systems, could also qualify as a POSITA in the field of the ’196 patent.
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`(Ex-1003, ¶¶23-26.)
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`U.S. Patent No. 10,599,196
`IPR2021-01196
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`V. CLAIM CONSTRUCTION
`A.
`“reservoir”
`The parties stipulated in the pending district court action to construe
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`“reservoir,” as used in the claims of the ’196 patent, to mean a “single receptacle
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`defining a fluid flow path.” (Ex-1012 at 2.) With respect to claims 1, 10, and 16, the
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`reservoir is claimed to include “a pump chamber,” “a thermal exchange chamber,”
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`and “a heat-exchanging interface” amongst other elements. Thus, the claims are
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`drafted such that the “reservoir” refers to an overarching collection of components
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`that form a single receptacle defining a fluid flow path. (Ex-1003, ¶39.)
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`B.
`“chamber”
`The parties stipulated in the pending district court action to construe
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`“chamber,” as used in the claims of the ’196 patent, to mean “compartment within
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`the reservoir.” (Ex-1012 at 2.) The claims are directed to both a “pump chamber”
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`and a “thermal exchange chamber.” Petitioner submits that these claimed
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`“chambers” should be given their plain and ordinary meaning in accordance with the
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`stipulated construction for “chamber” above. (Ex-1003, ¶40.)
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`C.
`“double-sided chassis”
`The parties stipulated in the pending district court action to construe “double-
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`sided chassis,” as used in the claims of the ’196 patent, to mean a “two-sided frame”
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`per the Court’s claim construction order in the pending district court action. (Ex-
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`Petition Requesting Inter Partes Review
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`1012 at 2; see Ex-1011 at 5-8; see also Ex-1003, ¶41.)
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`D.
`“stator”
`The parties stipulated in the pending district court action to construe “stator,”
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`as used in the claims of the ’196 patent, to mean “stationary parts of the motor that
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`perform or support an electrical or magnetic function of the motor,” per the Court’s
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`claim construction order in the pending district court action. (Ex-1012 at 2; see Ex-
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`1011 at 11-16; see also Ex-1003, ¶42.)
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`E.
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`“either a first end or a second end of the thermal exchange
`chamber”
`The parties stipulated in the pending district court action to construe “either a
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`first end or a second end of the thermal exchange chamber,” as used in the claims of
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`the ’196 patent, to mean “either the first end or the second end of the thermal
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`exchange chamber” in order to correct an antecedent basis issue. (Ex-1012 at 2.)2
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`Petitioner submits that, beyond the corrected antecedent basis issue, this term need
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`not be construed further and should be given its plain and ordinary meaning
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`consistent with the Court’s claim construction order in the pending district court
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`action. (Ex-1003, ¶43; see Ex-1011 at 8-10.)
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`2 Unless otherwise indicated, all emphasis has been added.
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`Petition Requesting Inter Partes Review
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`F.
`“an inlet … positioned below a center of the impeller”
`Petitioner submits that “an inlet … below a center of the impeller”
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`encompasses an “opening for fluid entrance near the center of the impeller along the
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`axis around which the impeller rotates.” The term “below a center of the impeller”
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`in the context of an impeller does not appear in the written description of the ’196
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`patent. Instead, the ’196 patent states, “[t]he inlet of the pump chamber 46 is the
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`entire opening into the cavity that the pump chamber configures, said cavity being
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`in direct communication with the interior of the reservoir housing 14 as such.”
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`(Ex-1001, 23:5-10). This is illustrated in FIG. 20 of the ’196 patent:
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`(Ex-1001, FIG. 20 (red rectangle added to show inlet).) As depicted above, FIG. 20
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`shows an inlet opening (area within the red rectangle) positioned near the center of
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`impeller 33 along the axis around which the impeller rotates (indicated in blue).
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`When read in context, claim 1 states “an inlet defined by the impeller cover
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`Petition Requesting Inter Partes Review
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`positioned below a center of the impeller configured to enable a cooling liquid to
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`flow into the center of the pump chamber.” This is shown in FIG. 20, where the
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`inlet provides liquid towards the center of the pump chamber. In other words, a
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`POSITA would have understood that the word “below” refers to the side of the
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`cooling liquid supplied by the inlet relative to the center of the impeller.
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`Further, if FIG. 20 were rotated clockwise so that the impeller 33 faces the
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`left (instead of downward), then “an inlet … positioned below a cente