throbber

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` UNITED STATES PATENT AND TRADEMARK OFFICE
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`BEFORE THE PATENT TRIAL AND APPEAL BOARD
`
`
`
`
`
`
`APPLE INC.,
`Petitioner,
`
`v.
`
`ERICSSON AB,
`Patent Owner.
`____________________
`
`Case IPR2022-00618
`Patent No. 9,313,178
`____________________
`
`
`
`PATENT OWNER’S CONTINGENT MOTION TO AMEND
`
`
`
`
`
`
`Google Exhibit 1030
`Google v. Ericsson
`
`

`

`
`
`IPR2022-00618
`MOTION TO AMEND
`
`Table of Contents
`Introduction ....................................................................................................... 1
`I.
`Statement of Relief Requested .......................................................................... 2
`II.
`III. The Substitute Claims Satisfy 37 C.F.R. § 42.121(a) ....................................... 2
`IV. The Substitute Claim Satisfies 37 C.F.R. § 42.121(b) ..................................... 6
`V. Level of Ordinary Skill in the Art ..................................................................... 9
`VI. Claim Construction ........................................................................................... 9
`VII. Patentability Over the Prior Art ........................................................................ 9
`VIII. Conclusion ......................................................................................................10
`
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`- i -
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`
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`

`

`
`
`IPR2022-00618
`MOTION TO AMEND
`
`EXHIBIT LIST
`Declaration of Kayvan B. Noroozi in Support of
`Motion for Admission Pro Hac Vice
`U.S. Patent Publ. No. 2014/0237243 (publication
`of U.S. Application No. 14/266,368 filed April
`30, 2014)
`U.S. Provisional Application Ser. No.
`61/500,316, filed Jun. 23, 2011
`U.S. Patent Publ. No 2012/0331293(Publication
`of U.S. Application Ser. No.: 13/530,997, filed on
`Jun. 22, 2012)
`
`- ii -
`
`
`
`Ex. 2001
`
`Ex. 2002
`
`Ex. 2003
`
`Ex. 2004
`
`
`
`
`
`
`
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`
`
`
`
`

`

`I.
`
`Introduction
`Ericsson AB (“Ericsson” or “Patent Owner”) respectfully moves under 35
`
`
`
`IPR2022-00468
`MOTION TO AMEND
`
`U.S.C. § 316(d) and 37 C.F.R. § 42.121 to conditionally amend challenged claims
`
`1-5, 7-11, 16-19 of the ’178 patent. In the event the Board finds the challenged
`
`claims unpatentable, Ericsson respectfully requests that the Board grant this motion
`
`to amend with respect to the corresponding proposed substitute claims.
`
`“Before considering the patentability of any substitute claims, the Board first
`
`must determine whether the motion to amend meets the statutory and regulatory
`
`requirement set forth in 35 U.S.C. § 316(d) and 37 C.F.R. §42.121.” Lectrosonics,
`
`Inc. v. Zaxcom, Inc., IPR2018-01129, -01130, Paper 15 at 4 (PTAB Feb. 25, 2019).
`
`The substitute claims must be i) presented in a claim listing; ii) reasonable in
`
`number; iii) responsive to a ground of unpatentability involved in the trial; iv) non-
`
`broadening; and v) supported by the written description. Id. at 4-8. As shown
`
`below, this motion and the substitute claims meet all requirements of 37 C.F.R §
`
`42.121. Moreover, the motion confirms Patent Owner’s belief that the proposed
`
`substitute claims are patentable over all known prior art, whether alone or in
`
`combination.
`
`In light of the Federal Circuit’s en banc decision in Aqua Products v. Matal,
`
`872 F.3d 1290 (Fed. Cir. 2017), Patent Owner need not do more. Having met its
`
`burdens, Patent Owner is entitled to the contingent substitute claim unless
`
`
`
`- 1 -
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`
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`
`
`

`

`IPR2022-00618
`MOTION TO AMEND
`Petitioner “prove[s] all propositions of unpatentability.” Id. at 1310.
`
`
`
`II.
`
`Statement of Relief Requested
`Pursuant to the Board’s Pilot Program, Patent Owner requests the Board’s
`
`Preliminary Guidance as to this Motion to Amend.
`
`To the extent the Board finds any of original claims 1-5, 7-11, and 16-19
`
`unpatentable, Ericsson respectfully requests that the Board grant this motion to
`
`amend with respect to the corresponding proposed substitute claim(s) presented
`
`herein.
`
`III. The Substitute Claims Satisfy 37 C.F.R. § 42.121(a)
`A. The substitute claims are non-broadening.
`As shown in the attached claims appendix, the proposed substitute claims
`
`retain all features of the corresponding original claims, and only add clarifying
`
`amendments. The proposed claims thus do not enlarge the scope of the
`
`corresponding original claims in any way. Rather, the clarifying amendments
`
`simply render more explicit the claim scope discussed in Patent Owner's Response.
`
`Thus, although Patent Owner believes the original claims, properly construed,
`
`already contain the requirements set forth in the contingent amended claims
`
`presented herein, Patent Owner provides the contingent amended claims in the
`
`event the Board declines to so construe the original claims.
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`- 2 -
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`
`
`

`

`
`
`Amendments
`
`IPR2022-00618
`MOTION TO AMEND
`Broadening
`Amendments
`None
`
`(cid:120) said content expiration key expiration
`times defining normal periods of use
`for each said content encryption key;
`(cid:120) detecting an explicit key change
`notification requesting a key change
`outside of the normal period-based
`expiration of the current key;
`(cid:120) the key rotation boundary
`constituting either the expiration time
`for said content encryption key or an
`explicit key change notification
`
`
`(cid:120) Claim depends from amended claim
`21 instead of claim 1
`
`(cid:120) Claim depends from amended claim
`21 instead of claim 1
`
`(cid:120) Claim depends from amended claim
`23 instead of claim 3
`
`(cid:120) Claim depends from amended claim
`24 instead of claim 4
`(cid:120) Claim depends from amended claim
`24 instead of claim 4
`(cid:120) Claim depends from amended claim
`21 instead of claim 1
`(cid:120) Claim depends from amended claim
`26 instead of claim 7
`
`(cid:120) Claim depends from amended claim
`21 instead of claim 1
`(cid:120) Claim depends from amended claim
`21 instead of claim 1
`(cid:120) said content expiration key expiration
`times defining normal periods of use
`
`- 3 -
`
`None
`
`None
`
`None
`
`None
`
`None
`
`None
`
`None
`
`None
`
`None
`
`None
`
`
`
`Substitute
`claim #
`21
`
`Original
`claim #
`1
`
`2
`
`3
`
`4
`
`5
`
`7
`
`8
`
`9
`
`10
`
`11
`
`16
`
`22
`
`23
`
`24
`
`25
`
`26
`
`27
`
`28
`
`29
`
`30
`
`31
`
`
`
`
`
`
`

`

`
`
`IPR2022-00618
`MOTION TO AMEND
`for each said content encryption key;
`(cid:120) detecting an explicit key change
`notification requesting a key change
`outside of the normal period-based
`expiration of the current key;
`(cid:120) the key rotation boundary
`constituting either the expiration time
`for said content encryption key or an
`explicit key change notification
`
`(cid:120) Claim depends from amended claim
`31 instead of claim 16
`
`(cid:120) Claim depends from amended claim
`32 instead of claim 17
`(cid:120) Claim depends from amended claim
`31 instead of claim 16
`
`
`None
`
`None
`
`None
`
`32
`
`33
`
`34
`
`17
`
`18
`
`19
`
`
`B.
`
`The substitute claims are responsive to a ground of
`unpatentability involved in the trial.
`The proposed substitute claims are also responsive to at least one ground of
`
`unpatentability in the trial. See 37 C.F.R. § 42.121(a)(2)(i). Petitioner has alleged
`
`that U.S. Pat. Pub. No. 2002/0172368 to Peterka, Ex. 1004 (“Peterka”), teaches a
`
`method for handling secure distribution of content that comprises initiating a media
`
`playback request and receiving a playback request response; parsing content
`
`information from the playback request response, the content information including
`
`content encryption keys, content encryption key identifiers, and content encryption
`
`key expiration times; retrieving content and manifest files from a content delivery
`
`server; detecting content encryption key rotation boundaries between periods of
`
`
`
`- 4 -
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`
`

`

`IPR2022-00618
`MOTION TO AMEND
`use of different content encryption keys in decrypting retrieved content; issuing
`
`
`
`requests to a license server ahead of a key rotation boundary to retrieve a second
`
`content encryption key to be used after a content encryption key rotation boundary
`
`is reached; and applying the second key for content decryption after the key
`
`rotation boundary is reached, as recited in the original claims. Each proposed
`
`substitute claim: (1) clarifies that the content expiration key expiration times define
`
`normal periods of use for each said content encryption key; (2) clarifies that the
`
`step of detecting content encryption key rotation boundaries between periods of
`
`use of different content encryption keys in decrypting retrieved content requires
`
`detecting an explicit key change notification requesting a key change outside of the
`
`normal period-based expiration of the current key; and (3) clearly notes that the
`
`key rotation boundary recited in limitations 21.5 and 31.6 encompasses either the
`
`expiration time for said content encryption key or an explicit key change
`
`notification. Neither Peterka nor the other cited references teach or suggest a
`
`system or method with those limitations.
`
`At the same time, it is not necessary “that every word added to or removed
`
`from a claim in a motion to amend must be solely for the purpose of overcoming
`
`an instituted ground.” Veeam Software Corp. v. Veritas Techs., LLC, IPR2014-
`
`00090, Paper 48 at 28 (Jul. 17, 2017). Rather, the question is whether “the
`
`proposed claim as a whole is ‘responsive to a ground of unpatentability involved in
`
`
`
`
`- 5 -
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`
`
`

`

`IPR2022-00618
`MOTION TO AMEND
`the trial.’” Id. at 29. Beyond that threshold, Patent Owner may add other
`
`
`
`amendments that “serve[ ] the public interest by ensuring issuance of valid and
`
`clear patents,” including “additional limitations to address potential § 101 or § 112
`
`issues.” Id. To the extent the Board finds that any other proposed amendments in a
`
`given substitute claim are not directly responsive to a ground of unpatentability
`
`here, those amendments are appropriate in view of the legal principles above.
`
`C. The substitute claims are reasonable in number.
`For each original challenged claim, Ericsson proposes only one substitute
`
`claim, fitting the “presumption . . . that only one substitute claim would be needed
`
`to replace each challenged claim.” 37 C.F.R. § 42.121(a)(3).
`
`IV. The Substitute Claim Satisfies 37 C.F.R. § 42.121(b)
`A. The substitute claims are presented in claim listing.
`As required by 37 C.F.R. § 42.121(b), this motion is accompanied by an
`
`appendix that lists the proposed substitute claim and clearly shows the proposed
`
`amendments to the claim in light of the corresponding original claim.
`
`B.
`
`The substitute claims are supported by the original and earlier-
`filed disclosures for each claim.
`Pursuant to 37 C.F.R. § 42.121(b)(1) and (b)(2), the below table
`
`demonstrates that each substitute claim is supported by each earlier-filed disclosure
`
`
`
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`- 6 -
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`
`
`

`

`IPR2022-00618
`MOTION TO AMEND
`as to which the benefit of the filing date is sought.1 In particular, the ’178 patent
`
`
`
`issued from Application No. 14/266,368 that was published as Patent Application
`
`Publ. No. 2014/0237243 (Application filed April 30, 2014)(Ex. 2002). The ‘178
`
`patent claims priority to U.S. provisional application Ser. No. 61/500,316, filed
`
`Jun. 23, 2011 (Ex. 2003), and U.S. patent application Ser. No.: 13/530,997, filed
`
`on Jun. 22, 2012, which was published as U.S. Patent Application Publ. No
`
`2012/0331293 (Ex. 2004) and issued as U.S. Pat. No. 8,751,807.
`
`Limitation2 Ex. 2002
`
`Ex. 2003
`
`Ex. 2004
`
`Abstract; ¶5; cls.
`1, 16
`¶5; cls. 1-3, 16
`
`¶¶3, 5, 36; cls. 1,
`16
`
`Abstract; ¶¶2, 3, 5; cls.
`1, 16
`¶¶26, 30, 31, 36, cls. 8,
`23, 29
`
`Abstract; pp.
`1, 3
`pp. 3-8; 11-
`12; Fig. 2; cl.
`1
`pp. 7-11; cl. 1 Abstract; ¶¶3, 5, 7-8,
`17-18, 21, 23, 27, 29,
`37
`Abstract; ¶¶3, 5, 15,
`19; Figs, 1, 3
`
`¶¶5; 22; cls. 1, 16 pp. 5-6, 7-8,
`11-12; Figs.
`2-3; cl.1, 16,
`17
`pp. 10-13;
`Figs 2-3
`
`¶¶20, 26, 33, 34, 37;
`Fig. 3
`
`pp. 11-13;
`Figs. 2-3
`
`¶¶3, 5, 7-8, 15, 19-20,
`26, 30, 33, 34, 37; Fig.
`
`
`- 7 -
`
`
`
`[21P]
`
`[21.1]
`
`[21.2]
`
`[21.3]
`
`[21.4]
`
`[21.5]
`
`Claim
`#
`21
`
`
`
`
`
`
`
`
`
`
`
`
`
`Abstract; ¶¶5, 9,
`23, 25, 26, 35,
`36, 39; Fig. 3
`¶¶3, 5, 8, 9, 21,
`26, 32, 35, 36,
`
`1 The support citations herein are not necessarily exhaustive or meant to
`limit the meaning of the corresponding limitations.
`2 Limitation citations correspond to numbering shown in the claims
`appendix attached hereto.
`
`
`
`

`

`39; Fig. 3; cls. 1,
`16
`¶¶5, 36, 39; Fig.
`3; cl. 1
`¶¶3, 5, 8, 10, 20,
`21, 35; cls. 1, 16
`¶¶5, 20, 23, 29,
`32; cls. 3
`¶¶6, 8-10, 20, 21,
`24, 25, 26, 29,
`31, 39; cl. 4
`¶¶21, 23, 31, 39;
`cl. 4
`¶¶8, 10, 20; cls.
`7, 19
`¶¶9, 10, 20; cl. 8 pp. 4-5, 7
`¶¶8-10, 20; 21,
`pp. 4-5, 7
`31 cl. 9
`¶¶22, 33; cl. 10
`¶¶33; cl. 11
`¶¶16, 17; cls. 16-
`20
`¶¶16, 17; cls. 16-
`20
`¶5; cls. 1-3, 16
`
`pp. 10-13
`
`pp. 7-11
`
`pp. 4-6, 7-9
`
`pp. 4-6, 7-9,
`11-13; cl. 8
`
`pp. 4-6, 7-9,
`11-13; cl. 8
`pp. 5-7
`
`pp. 4, 6-7
`pp. 4, 6-7
`Abstract; pp
`1, 3
`pp. 1, 7
`
`IPR2022-00618
`MOTION TO AMEND
`
`
`
`3
`
`¶¶20-21; Fig. 3
`
`¶¶7-8, 17, 33
`
`¶¶7-8, 17, 21, 23, 27
`
`¶¶7-8, 17, 21, 23, 27
`
`¶¶7-8, 17, 21, 23, 27
`
`¶¶7-8, 17-18
`
`¶¶6, 17; cl. 18, 35
`¶¶7-8, 17-18. 27, 32,
`37
`¶¶19, 31; cl. 21, 22
`¶¶19, 31; cl. 22
`Abstract; ¶¶3, 14, 15;
`Fig. 1; cl. 37
`¶¶14-15; cl. 25, 37;
`Fig. 1
`¶¶26, 30, 31, 36, cls. 8,
`23, 29
`
`pp. 3-8; 11-
`12; Fig. 2; cl.
`1
`pp. 7-11; cl. 1 Abstract; ¶¶3, 5, 7-8,
`17-18, 21, 23, 27, 29,
`37
`Abstract; ¶¶3, 5, 15,
`19; Figs, 1, 3
`
`¶¶3, 5, 36; cls. 1,
`16
`
`Abstract; ¶¶5, 9,
`23, 25, 26, 35,
`36, 39; Fig. 3
`¶¶3, 5, 8, 9, 21,
`
`¶¶5; 22; cls. 1, 16 pp. 5-6, 7-8,
`11- 12; Figs.
`2-3; cl.1, 16,
`17
`pp. 10-13;
`Figs 2-3
`
`¶¶20, 26, 33, 34, 37;
`Fig. 3
`
`pp. 11-13;
`
`¶¶3, 5, 7-8, 15, 19-20,
`
`
`- 8 -
`
`
`
`[21.6]
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`[31.P]
`
`[31.1]
`
`[31.2]
`
`[31.3]
`
`[31.4]
`
`[31.5]
`
`[31.6]
`
`
`
`22
`
`23
`
`24
`
`25
`
`26
`
`27
`28
`
`29
`30
`31
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`

`

`Figs. 2-3
`
`
`
`IPR2022-00618
`MOTION TO AMEND
`26, 30, 33, 34, 37; Fig.
`3
`
`pp. 10-13
`
`¶¶20-21; Fig. 3
`
`pp. 7-11
`
`¶¶7-8, 17, 33
`
`pp. 4-6, 7-9,
`11-13; cl. 8
`
`¶¶7-8, 17, 21, 23, 27
`
`pp. 5-7
`
`¶¶7-8, 17-18
`
`
`
`32
`
`33
`
`34
`
`[31.7]
`
`
`
`
`
`
`
`26, 32, 35, 36,
`39; Fig. 3; cls. 1,
`16
`¶¶5, 36, 39; Fig.
`3; cl. 1
`¶¶3, 5, 8, 10, 20,
`21, 35; cls. 1, 16
`¶¶6, 8-10, 20, 21,
`24, 25, 26, 29,
`31, 39; cl. 4
`¶¶8, 10, 20; cls.
`7, 19
`V. Level of Ordinary Skill in the Art
`Patent Owner agrees with Petitioner’s expert regarding the level of ordinary
`
`skill in the art. Ex. 1003, ¶¶ 23-26.
`
`VI. Claim Construction
`At this stage, Patent Owner does not propose any specific claim
`
`constructions as it is not Patent Owner’s burden to demonstrate patentability of the
`
`proposed substitute claim over the prior art. While Patent Owner believes the new
`
`proposed limitations, plainly understood, establish patentability of the proposed
`
`claim, Patent Owner reserves the right to propose claim constructions as needed to
`
`respond to any allegations of unpatentability presented by Petitioner.
`
`VII. Patentability Over the Prior Art
`In light of the Federal Circuit’s en banc decision in Aqua Products v. Matal,
`
`872 F.3d 1290, 1296, 1310 (Fed. Cir. 2017), Patent Owner need not prove the
`
`patentability of the proposed substitute claim. And as the Patent Office has
`
`
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`- 9 -
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`
`
`

`

`IPR2022-00618
`MOTION TO AMEND
`acknowledged before the Federal Circuit, and the Federal Circuit has held, Patent
`
`
`
`Owner adequately meets its duty of candor by simply confirming—as it does
`
`here—its belief that the proposed substitute claim is patentable over all known
`
`prior art, alone or combined. Nike Inc. v. Adidas AG, 812 F.3d 1326, 1350 (Fed.
`
`Cir. 2016) (overruled en banc on other grounds). Nonetheless, the proposed
`
`amended claims are patentable at least for the reasons set forth in Section III.A.
`
`VIII. Conclusion
`Patent Owner respectfully requests the Board’s Preliminary Guidance as to
`
`this Motion, and further requests that, to the extent any original claim is deemed
`
`unpatentable, the Board grant the corresponding proposed substitute claim.
`
`Respectfully submitted,
`
`/s Peter C. Knops/
`Peter C. Knops, Reg. No. 37,659
`Kayvan B. Noroozi, Admitted Pro Hac Vice
`NOROOZI PC
`11601 Wilshire Blvd., Suite 2170
`Los Angeles, CA 90025
`
`Attorneys for the Patent Owner
`
`
`
`
`
`
`Date: November 28, 2022
`
`
`
`
`
`
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`
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`- 10 -
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`
`
`

`

`
`
`IPR2022-00618
`MOTION TO AMEND
`
`CLAIMS APPENDIX
`Underlining and strikethrough text show the modifications to the original
`
`claim being made in the corresponding substitute claim.
`
`1-5
`
`
`
`7-11
`
`16-19
`
`21.
`
`
`
`(Canceled)
`
`(Canceled)
`
`(Cancelled)
`
`(Substitute for claim 1, if found unpatentable)
`
`[21.1P] A method for handling secure distribution of content comprising:
`
`
`[21.1] initiating a media playback request and receiving a playback request
`response;
`
`[21.2] parsing content information from the playback request response, the content
`information including content encryption keys, content encryption key identifiers,
`and content encryption key expiration times, said content expiration key expiration
`times defining normal periods of use for each said content encryption key;
`
`[21.3] retrieving content and manifest files from a content delivery server;
`
`[21.4] detecting content encryption key rotation boundaries between periods of use
`of different content encryption keys in decrypting retrieved content by detecting an
`explicit key change notification requesting a key change outside of the normal
`period-based expiration of the current key;
`
`[21.5] issuing requests to a license server ahead of a key rotation boundary to
`retrieve a second content encryption key to be used after a content encryption key
`rotation boundary is reached, said key rotation boundary constituting either the
`expiration time for said content encryption key or an explicit key change
`notification; and
`
`[21.6] applying the second key for content decryption after the key rotation
`boundary is reached.
`
`
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`
`
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`- i -
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`
`
`

`

`
`
`IPR2022-00618
`MOTION TO AMEND
`
`
`
`22.
`
`
`
`(Substitute for claim 2, if found unpatentable)
`
`The method of claim 211, wherein the content encryption keys and content
`encryption key identifiers returned in the playback request response include the
`content encryption key and associated identifier currently being applied as well as
`a future content encryption key and associated identifier yet to be applied.
`
`23.
`
`
`
`(Substitute for claim 3, if found unpatentable)
`
`The method of claim 211, wherein the content encryption key expiration returned
`in the playback request response is expressed as an expected minimum interval
`between periodic key rotation.
`
`24.
`
`
`
`(Substitute for claim 4, if found unpatentable)
`
`The method of claim 233, further comprising: timing the prefetching of a next un-
`retrieved content encryption key based on an expected expiration of the content
`encryption key currently being used.
`
`25.
`
`
`
`(Substitute for claim 5, if found unpatentable)
`
`The method of claim 244, further comprising: prefetching a next un-retrieved key a
`fixed duration before the expected expiration of the content encryption key
`currently being used.
`
`26.
`
`
`
`(Substitute for claim 7, if found unpatentable)
`
`The method of claim 211, wherein subsequent content encryption key identifiers
`are predictable based on a predetermined known progression.
`
`27.
`
`
`
`(Substitute for claim 8, if found unpatentable)
`
`The method of claim 267, further comprising: the identifier being calculated as
`monotonically increasing sequential integer values based on the number of
`
`
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`
`- ii -
`
`
`
`

`

`IPR2022-00618
`MOTION TO AMEND
`segments or video frames generated during a fixed periodic content encryption key
`expiration interval.
`
`
`
`28.
`
`
`
`(Substitute for claim 9, if found unpatentable)
`
`The method of claim 267, further comprising: the identifier being calculated as an
`expected wall clock time for applying the next content encryption key based on a
`fixed periodic content encryption key expiration interval.
`
`29.
`
`
`
`(Substitute for claim 10, if found unpatentable)
`
`The method of claim 211, wherein license server communications are
`secured and authenticated using a selected one of Secure Sockets Layer and a
`token-based technique using a token encrypted with a symmetric key.
`
`30.
`
`
`
`(Substitute for claim 11, if found unpatentable)
`
`The method of claim 2910, wherein the token-based technique employs white box
`encryption to encrypt the token.
`
`31.
`
`
`
`(Substitute for claim 16, if found unpatentable)
`
`[31.P] A computerized device operable as a client for handling secure distribution
`of content, comprising:
`[31.1] memory operative to store computer program instructions;
`one or more processors;
`input/output interface circuitry; and
`interconnect circuitry coupling the memory, processors and input/output interface
`circuitry together,
`wherein the processors are operative to execute the computer program instructions
`from the memory to cause the computerized device to:
`[31.2] initiate a media playback request and receive a playback request response;
`
`
`
`
`
`
`
`- iii -
`
`
`
`

`

`
`
`IPR2022-00618
`MOTION TO AMEND
`[31.3] parse content information from the playback request response, the content
`information including content encryption keys, content encryption key identifiers,
`and content encryption key expiration times;
`[31.4] retrieve content and manifest files from a content delivery server;
`[31.5] detect content encryption key rotation boundaries between periods of use of
`different content encryption keys in decrypting retrieved content;
`[31.6] issue requests to a license server ahead of a key rotation boundary to retrieve
`a second content encryption key to be used after a content encryption key rotation
`boundary is reached; and
`[31.7] apply the second key for content decryption after the key rotation boundary
`is reached.
`32.
`
`
`(Substitute for claim 17, if found unpatentable)
`
`The computerized device of claim 31 16, wherein the content encryption keys and
`content encryption key identifiers returned in the playback request response
`include the content encryption key and associated identifier currently being applied
`as well as a future content encryption key and associated identifier yet to be
`applied.
`
`33.
`
`
`
`(Substitute for claim 18, if found unpatentable)
`
`The computerized device of claim 3217, wherein the computer program
`instructions further cause the computerized device to time the prefetching of a next
`un-retrieved content encryption key based on an expected expiration of the content
`encryption key currently being used.
`
`34.
`
`
`
`(Substitute for claim 19, if found unpatentable)
`
`The computerized device of claim 3116, wherein subsequent content encryption
`key identifiers are predictable based on a predetermined known progression.
`
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`- iv -
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`

`

`CERTIFICATE OF SERVICE
`
`
`
`IPR2022-00468
`MOTION TO AMEND
`
`
`
`The undersigned hereby certifies that the foregoing PATENT OWNER’S
`
`CONTINGENT MOTION TO AMEND was served electronically via e-mail on
`
`November 28, 2022, on the following counsel of record for Petitioner:
`
`
`
`
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`
`
`
`
`/Kayvan Noroozi/
`Kayvan Noroozi
`NOROOZI PC
`11601 Wilshire Blvd., Suite 2170
`Los Angeles, CA 90025
`Tel.: 310-975-7074
`
`Counsel for Patent Owner
`
`
`
`
`
`
`
`
`
`
`
`
`
`Date: November 28, 2022
`
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`

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