Unified Patents, LLC v. Dolby Laboratories Licensing Corp.

This case, Unified Patents, LLC v. Dolby Laboratories Licensing Corp. (IPR2021-00275), is an Inter Partes Review (IPR) proceeding before the Patent Trial and Appeal Board (PTAB) that challenged the patentability of U.S. Patent No. 10,237,577. Unified Patents, LLC is a member-based organization that aims to deter non-practicing entities (NPEs), often referred to as "patent trolls," from asserting low-quality patents by initiating validity challenges, primarily through IPRs. Its activities are funded by member fees and focus on improving patent quality and reducing unsubstantiated patent assertions in specific technology sectors. Dolby Laboratories Licensing Corp., conversely, is a well-known operating company specializing in audio, video, and imaging technologies. Its business model is largely centered on developing and licensing its proprietary innovations, such as noise reduction and surround sound technologies, to manufacturers, content creators, and service providers globally, generating a significant portion of its revenue from these licensing activities.

The sole patent at issue in this IPR is U.S. Patent No. 10,237,577, titled "Audio playback synchronization across multiple clients." This patent generally relates to systems and methods for synchronizing the playback of audio content across multiple client devices. Specifically, it addresses ensuring that audio is played back in a synchronized manner in environments where multiple devices are rendering the same or related audio streams. The IPR challenged claims 1, 7, and 8 of this patent.

The procedural posture involves an IPR filed on December 11, 2020, at the Patent Trial and Appeal Board, an administrative tribunal within the U.S. Patent and Trademark Office (USPTO). The PTAB is a specialized venue for challenging the validity of issued patents, offering a faster and generally more cost-effective alternative to traditional district court litigation. PTAB proceedings are presided over by panels of administrative patent judges who possess both technical and legal expertise. Unlike district courts, which require a "clear and convincing evidence" standard to prove invalidity, the PTAB applies a lower "preponderance of the evidence" standard. In this specific case, the PTAB issued a Final Written Decision finding that Unified Patents failed to demonstrate that any of the challenged claims (1, 7, and 8) of US10237577 were unpatentable. The Board also chose not to rule on Dolby's arguments regarding other real parties in interest, a point that has sometimes been a subject of contention in Unified Patents' IPRs. This case is notable due to Unified Patents' ongoing efforts to challenge patents, particularly those asserted by NPEs, even though Dolby is a practicing entity that relies heavily on its patent portfolio for its licensing-driven business model.

This case, IPR2021-00275, is an Inter Partes Review (IPR) proceeding before the Patent Trial and Appeal Board (PTAB), not a district court patent infringement litigation. The proceeding involved Unified Patents, LLC as the Petitioner and Dolby Laboratories Licensing Corp. as the Patent Owner, concerning U.S. Patent No. 10,237,577.

Here are the key legal developments and outcomes in chronological order:

• Filing of IPR Petition (2020-12-11): Unified Patents, LLC filed a petition for Inter Partes Review challenging claims 1, 7, and 8 of U.S. Patent No. 10,237,577, owned by Dolby Laboratories Licensing Corp..
• Institution Decision (Date Not Specified, but within typical IPR timeline): The PTAB instituted review of the challenged claims. During this phase, Dolby identified nine other entities it believed should have been named as real parties in interest (RPIs). However, the Board declined to adjudicate the RPI dispute at institution, proceeding with Unified Patents as the sole RPI.
• Claim Construction: Within the IPR proceeding, the PTAB conducted its own claim construction as part of determining the patentability of the challenged claims.
• Final Written Decision (Date Not Specified, but within typical IPR timeline): The PTAB issued a final written decision, finding that Unified Patents failed to demonstrate that any of the challenged claims (claims 1, 7, and 8) of US10237577 were unpatentable. The Board also largely avoided the issue of other alleged RPIs, stating that RPI determinations were unnecessary as there was no evidence that any alleged RPI was time-barred or estopped, or that Unified purposefully omitted RPIs to gain an advantage.
• Appeal to the Federal Circuit (Dolby's Appeal, June 5, 2025): Dolby Laboratories Licensing Corp. appealed the PTAB's refusal to adjudicate the real party in interest issue to the U.S. Court of Appeals for the Federal Circuit. On June 5, 2025, the Federal Circuit dismissed Dolby's appeal for lack of Article III standing. The court held that a statutory right to appeal under the America Invents Act (AIA) does not supersede the requirement for Article III standing. It further concluded that Dolby's arguments regarding a statutory informational right under 35 U.S.C. § 312(a)(2) or various speculative harms were insufficient to establish injury in fact.
• Petition for Certiorari to the Supreme Court (February 2026): Dolby appealed the Federal Circuit's decision to the U.S. Supreme Court, filing a petition for certiorari in February 2026. Dolby argued that the Federal Circuit's decision "gutted the protections Congress guaranteed patent owners under § 312(a)(2)" and created "artificial barriers" inconsistent with the statute.
• Supreme Court Denies Certiorari (2026-06-22): On June 22, 2026, the U.S. Supreme Court denied Dolby Laboratories' petition for certiorari, thereby leaving the Federal Circuit's decision intact.

Outcome:
The PTAB's final written decision found that Unified Patents failed to prove any of the challenged claims (1, 7, and 8) of US10237577 unpatentable. Dolby's subsequent appeals regarding the PTAB's refusal to adjudicate the real party in interest issue were ultimately unsuccessful, with the Federal Circuit dismissing the appeal for lack of standing and the Supreme Court denying certiorari. This means the PTAB's decision on patentability, and its handling of the RPI issue, stands. There were no other parallel PTAB IPR/PGR proceedings for US10237577 explicitly identified in the search results.

I'll research counsel of record for the petitioner (Unified Patents, LLC) in this IPR, plus check the parallel Federal Circuit appeal.

Let me confirm the Federal Circuit appeal counsel for the appellee (Unified) and the in-house counsel details.

Let me verify the lead/backup counsel designations in the petition and the final written decision caption.

Counsel of Record — Petitioner / "Plaintiff-Side" Party (Unified Patents, LLC)

Posture flag first. This is not a district court infringement case, so there is no PACER complaint, no Rule 12/26 appearances, and no "local counsel." The plaintiff-side party is the petitioner, Unified Patents, LLC, and its counsel of record are those designated on the PTAB docket (37 C.F.R. § 42.8(b)(3)) and, later, on the Federal Circuit docket for No. 23-2110. Per RPX, the '577 patent has never been asserted in any infringement litigation, so there is no parallel district court docket in which Unified appears as a defendant either. Nothing below is sealed — the counsel listings are public in the petition's Power of Attorney, the POP-request notification, the Final Written Decision caption, and the Federal Circuit brief caption.

---

A. Outside counsel — Haynes and Boone, LLP (lead)

B. In-house counsel — Unified Patents, LLC

---

C. Sourcing notes, gaps, and one flag

• Sources for the PTAB counsel list: Petitioner's Power of Attorney under 37 C.F.R. § 42.10(b) (executed 12/10/2020; appoints practitioners at Customer No. 27683 — the Haynes and Boone correspondence number); Patent Owner's Mandatory Notices (Feb. 4, 2021) certificate of service, which reproduces Petitioner's full service list; PTAB Notification of Receipt of POP Request ("For PETITIONER: Raghav Bajaj, Roshan Mansinghani, Ashraf Fawzy, David McCombs, Jonathan Bowser, Jung Hahm"); and the Final Written Decision caption (June 2022, Papers 46–47; PDF at bannerwitcoff.com/wp-content/uploads/2022/06/IPR2021-00275.pdf).
• Sources for the appellate counsel list: Appellee Unified Patents' Response Brief, No. 23-2110 (Fed. Cir., filed Mar. 8, 2024) and the CourtListener docket/parties page for No. 23-2110; Haynes Boone press release, "Haynes Boone Wins Federal Circuit Dismissal for Unified Patents" (June 6, 2025).
• Not confirmed: which attorney argued the March 23, 2022 PTAB oral hearing (both a public and confidential transcript were entered as Papers 45/46, but I did not retrieve the transcript to verify the advocate). Bajaj is the most likely, but I won't state it as fact.
• Contradiction to flag in the earlier sections: the prior "Key legal developments" entry dates the Federal Circuit appeal to "June 5, 2025." June 5, 2025 is the decision date (Fed. Cir., Moore, Clevenger, Chen, JJ.). The notice of appeal was filed in July 2023, docketed as No. 23-2110 — the case number itself reflects the 2023 filing. The prior section is correct on the outcome but conflates filing with decision.
• No sealed counsel: none of the Petitioner's counsel designations are under seal. The sealed materials in this IPR relate to Unified's membership/revenue information (the motion to seal granted in the FWD), not to counsel identity.

In the IPR proceeding IPR2021-00275, and its subsequent appeals, Dolby Laboratories Licensing Corp. (the patent owner and appellant) was represented by the following counsel:

For Dolby Laboratories Licensing Corp. (Defendant/Appellant):

• Kayvan B. Noroozi (Lead Counsel)
  • Firm: Noroozi PC
  • Office Location: Los Angeles, CA
  • Note: Argued for Dolby at the Federal Circuit. His firm, Noroozi PC, is listed as patent owner counsel in PTAB analytics.
• Richard Epstein (Of Counsel)
  • Firm: Unspecified in the provided search results, but associated with Norwalk, CT.
  • Note: Also represented Dolby at the Federal Circuit.

While specific in-house counsel for this particular IPR are not named in the provided search results, Dolby Laboratories does employ in-house legal teams for intellectual property, patent licensing, and litigation matters. For instance, Marie H. MacNichol is Senior Director of Patent Licensing at Dolby Laboratories in San Francisco, CA, and has prior experience in patent litigation. Additionally, job postings indicate that Dolby's in-house litigation counsel works closely with outside counsel on strategy and substantive patent issues.