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`Michael Pieja
`312.881.5954
`mpieja@goldmanismail.com
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`SENT VIA E-MAIL
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`November 21, 2022
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`Reza Mirzaie, Paul A. Kroeger, Philip X. Wang, James N. Pickens, Minna Chan, Christian
`Conkle
`Russ August & Kabat
`12424 Wilshire Blvd. 12th Floor
`Los Angeles, CA 90025
`Phone: (310) 826-7474
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`Re: XR Communications, LLC v. Apple, Inc., Case No. 6:21-cv-00620 (W.D. Tex.)
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`Dear Counsel:
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`Apple, Inc. (“Apple”) has filed an inter partes review (IPR) petition (IPR2022-01155) with the
`Patent Trial and Appeal Board (PTAB) to address the validity of claims 1-7, 15, and 16 of U.S.
`Patent No. 10,715,235. The tables in attached Appendix A list all the grounds, challenged
`claims, and references asserted in IPR2022-01155.
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`Apple had previously stipulated that:
`if the PTAB institutes IPR2022-01155 based on the grounds and claims listed in the
`•
`tables in Appendix A, Apple will not pursue in the District Court any ground asserted in
`IPR2022-01155 or any other ground using U.S. Patent No. 6,031,877 (“Saunders”) as a
`primary reference against claims 1-7, 15, and 16.
`if the PTAB institutes IPR2022-00367 based on the grounds and claims listed in the
`tables in Appendix B, Apple will not pursue in the District Court the specific grounds
`raised in IPR2022-00367 against claims 8-14.
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`•
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` I
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` write to inform you that Apple hereby further stipulates that:
`if the PTAB institutes IPR2022-01155 based on the grounds and claims listed in the
`•
`tables in Appendix A, Apple will not pursue in the District Court any ground using U.S.
`Patent No. 6,006,077 (“Shull”) or Saunders against claims 1-16.
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`In so stipulating, Apple seeks to minimize the overlap of issues and avoid multiple proceedings
`addressing the validity of the challenged claims based on grounds involving Saunders or Shull.
`Rather, through this stipulation, Apple expresses its intention to have only the PTAB address
`the Instituted Grounds of invalidity of claims 1-7, 15, and 16. But, for the sake of clarity and to
`avoid any doubt, if the PTAB declines to institute IPR2022-01155, Apple reserves the right to
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`Chicago 200 South Wacker, 22nd Floor, Chicago, IL 60606
`Dallas 7557 Rambler Road, Suite 1450, Dallas, TX 75231
`Santa Monica 100 Wilshire Boulevard, Suite 1760, Santa Monica, CA 90401 goldmanismail.com
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`APPLE 1044
`Apple et al. v. XR Commc'ns
`IPR2022-01155
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`November 21, 2022
`Page 2
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`assert the denied grounds and any other grounds not raised in IPR2022-01155 in the litigation.
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`Sincerely,
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`Michael Pieja
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`November 21, 2022
`Page 3
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`Appendix A – Grounds and Prior Art References Used in IPR2022-01155
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`Ground
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`1
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`2
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`Claim(s)
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`1-5, 15, 16
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`6, 7
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`35 U.S.C. § 103
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`Saunders in view of Hottinen
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`Saunders in view of Hottinen and Shull
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`List of References
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`Reference Name Details
`Saunders
`U.S. Patent No. 6,031,877
`Hottinen
`PCT Application Publication No. WO 02/47286
`Shull
`U.S. Patent No. 6,006,077
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`November 21, 2022
`Page 4
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`Appendix B – Grounds and Prior Art References Used in IPR2022-00367
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`Ground
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`1
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`2
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`Claim(s)
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`8-12
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`13, 14
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`35 U.S.C. § 103
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`Burke
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`Burke in view of Shull
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`List of References
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`Reference Name Details
`Burke
`U.S. Patent No. 7,155,231
`Shull
`U.S. Patent No. 6,006,077
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`4
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