Unified Patents v. Unknown Patent Owner

Unified Patents initiated an Inter Partes Review (IPR) against US patent 10762002 before the Patent Trial and Appeal Board (PTAB), challenging its validity. The patent owner in this IPR is Headwater Research LLC, a known Non-Practicing Entity (NPE) or patent licensing entity. Unified Patents is a membership organization that aims to deter "patent trolls" and reduce non-practicing entity patent assertions by challenging the validity of patents in specific technology sectors, often through filing IPRs.

US Patent 10762002, titled "Providing and managing mobile communications services," broadly describes systems and methods related to managing mobile communication services, which can include aspects of how mobile devices interact with networks and services. While no specific accused product or service is directly at issue in an IPR, Headwater Research LLC has extensively litigated patents related to eSIM provisioning, cellular network management, mobile device policy, and connectivity management. They have asserted various patents against major telecommunications and technology companies such as AT&T, Samsung, Verizon, Apple, and T-Mobile, with cases often filed in the Eastern and Western Districts of Texas. For instance, Headwater Research has recently been involved in infringement lawsuits against AT&T, Verizon, and T-Mobile concerning eSIM and cellular network patents, and against Apple for mobile device network management technology.

This IPR is currently at the Patent Trial and Appeal Board (PTAB), a specialized administrative court within the USPTO, which serves as an alternative forum to district court litigation for challenging patent validity. The PTAB's proceedings are generally faster and less costly than district court cases and operate under a lower burden of proof for challenging patents based on prior art. The case is notable as it highlights the ongoing strategy by entities like Unified Patents to combat assertions from NPEs like Headwater Research LLC by challenging the underlying patent validity. The outcome of such IPRs can have significant implications for the enforceability of patents, particularly those frequently asserted by NPEs in broad technology areas like mobile communications and connectivity. The PTAB’s final written decision is typically issued within 12 months of institution, and can be appealed to the Federal Circuit.

Contradiction Flagged: The initial case metadata provided in the prompt states that the Plaintiff in IPR2024-01436 is Unified Patents and the Patent Owner is Headwater Research LLC. However, upon web search, it has been identified that for IPR2024-01436, the Petitioners are Yealink USA Network Technology Co Ltd. and Yealink Network Technology Co Ltd., and the Patent Owner is Barco NV for U.S. Patent 10762002. This summary will proceed with the verified parties and patent owner for IPR2024-01436.

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Key Legal Developments and Outcome for IPR2024-01436 (U.S. Patent 10762002)

This Inter Partes Review (IPR), IPR2024-01436, was initiated by Yealink USA Network Technology Co Ltd. and Yealink Network Technology Co Ltd. (Petitioners) challenging the validity of U.S. Patent 10762002, owned by Barco NV (Patent Owner).

• Filing & Institution: The petition for IPR2024-01436 was filed on September 16, 2024. The Patent Trial and Appeal Board (PTAB) subsequently instituted the review on April 8, 2025.
• Final Written Decision: The PTAB issued its Final Written Decision on April 7, 2026. The status of the IPR is "Final Written Decision." While the specific outcome of the decision (i.e., which claims were found unpatentable or patentable) is not detailed in the available snippets, the issuance of a Final Written Decision concludes the IPR proceeding at the PTAB. The PTAB is statutorily required to issue a final written decision within 12 months of institution, though a six-month extension is possible.

Parallel PTAB IPR/PGR Proceedings on Asserted Patents and Their Effect on Litigation

At the time of this summary, no direct U.S. district court litigation involving U.S. Patent 10762002 with Barco NV as the patent owner has been identified in the provided search results. The search results primarily detail extensive litigation by Headwater Research LLC (the mistakenly identified patent owner in the original prompt) against various telecommunications and technology companies concerning other patents. However, there is no indication that U.S. Patent 10762002 was asserted in those specific cases.

The outcome of an IPR's Final Written Decision can significantly impact any co-pending district court litigation by potentially rendering asserted claims unpatentable. While a district court has the discretion to grant a stay pending the outcome of an IPR, this is not always guaranteed. If claims are found unpatentable in an IPR, it could lead to the dismissal of corresponding claims in district court cases or affect settlement negotiations. The ability to request a Director Review of a PTAB decision is also a development in PTAB practice. However, given the lack of identified parallel district court litigation for U.S. Patent 10762002, the specific effect of this IPR on such litigation cannot be determined from the available information.

Unified Patents, as the petitioner in IPR2024-01436, typically handles post-grant proceedings before the PTAB using its in-house legal team. Unified Patents is a membership organization that seeks to deter patent abuse and improve patent quality by challenging the validity of patents, often through IPRs.

The organization employs a team of Senior Patent Counsel who are experienced in preparing and litigating post-grant proceedings. While specific counsel for IPR2024-01436 were not individually named in the provided search results, the following individuals are known to be part of Unified Patents' in-house legal team and are involved in such proceedings:

• Jonathan Stroud - COO & CLO
  • Firm: Unified Patents, based in Washington, D.C. (with remote options available for some positions).
  • Experience Note: Jonathan Stroud is the Chief IP Counsel for Unified Patents and has participated in webinars discussing patent quality and PTAB interactions.
• Jenn Bisk - Senior Patent Counsel
  • Firm: Unified Patents.
  • Experience Note: As Senior Patent Counsel, Jenn Bisk is involved in managing patent office proceedings internally and litigating post-grant proceedings.
• Kyla Bulter - Senior Patent Counsel
  • Firm: Unified Patents.
  • Experience Note: Kyla Bulter is part of the in-house team responsible for patent office proceedings.
• Kelly Hughes - Senior Patent Counsel
  • Firm: Unified Patents.
  • Experience Note: Kelly Hughes contributes to the internal management and litigation of patent office proceedings.
• Patrick King - Senior Patent Counsel
  • Firm: Unified Patents.
  • Experience Note: Patrick King's role involves preparing and litigating post-grant proceedings before the PTAB.
• Roshan Mansinghani - Head of Operations
  • Firm: Unified Patents.
  • Experience Note: Roshan Mansinghani also serves as Legal Head-NPE for Unified Patents and has been a speaker in webinars related to NPEs.
• Jessica L.A. Marks - SEP & Foreign Managing Counsel
  • Firm: Unified Patents.
  • Experience Note: Jessica Marks is a Senior Patent Counsel at Unified Patents and has spoken on PTAB-related topics.
• T.J. Murphy - Senior Patent Counsel
  • Firm: Unified Patents.
  • Experience Note: As Senior Patent Counsel, T.J. Murphy is involved in various patent office proceedings.
• Vinu Raj - Senior Patent Counsel
  • Firm: Unified Patents.
  • Experience Note: Vinu Raj contributes to the drafting, filing, and litigating of patent office proceedings.
• Jordan Rossen - Senior Patent Counsel
  • Firm: Unified Patents.
  • Experience Note: Jordan Rossen prepares and litigates post-grant proceedings for Unified Patents and previously practiced intellectual property litigation at Ropes & Gray and Paul Hastings.
• David Seastrunk - Senior Patent Counsel
  • Firm: Unified Patents.
  • Experience Note: David Seastrunk's experience includes preparing and litigating post-grant proceedings before the PTAB for Unified Patents, and prior practice at Finnegan, Henderson, Farabow, Garrett & Dunner, LLP, where he handled post-grant proceedings, district court cases, and ITC investigations.
• Andrea Shoffstall - Senior Patent Counsel
  • Firm: Unified Patents.
  • Experience Note: Andrea Shoffstall is part of the team handling patent office proceedings.

Unified Patents generally does not use outside counsel for its IPR filings, relying on its internal team of patent attorneys.

I'll verify the actual parties and counsel for this proceeding before answering, since the case metadata and prior summary conflict.

Confirmed the parties. Now let me pull counsel details from the IPR docket and the parallel E.D. Tex. case.

Let me verify counsel bios and check for any additional/appellate counsel.

Threshold issue: there is no "defendant" in this case

Before listing counsel, one clarification is required — and it compounds the metadata contradiction already flagged in the prior section.

IPR2024-01436 has no defendants. It is a PTAB inter partes review with two sides: Petitioner Yealink (USA) Network Technology Co., Ltd. and Yealink Network Technology Co., Ltd., and Patent Owner Barco N.V. The prompt's metadata ("Unified Patents v. Unknown Patent Owner") does not match the record; the prior section already flagged this correctly and I confirm it. Searching for a Unified Patents IPR numbered 2024-01436 returns nothing. U.S. Pat. 10,762,002 ("Providing and managing mobile communications services" per the metadata) is in fact a Barco conference-collaboration patent (ClickShare dongle/USB generic-driver claims), not a Headwater Research mobile-telecom patent — the title/owner pairing in the case metadata appears to be from a different record.

Accordingly, I read the task as seeking counsel for the party occupying the defendant posture — Yealink (the accused infringer in the parallel E.D. Tex. infringement action Barco, Inc. v. Yealink (USA) Network Technology Co., No. 2:23-cv-00521-JRG-RSP). I also list Patent Owner-side counsel, since that is the only other "side" in this forum.

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A. Yealink (defendant / Petitioner) — counsel of record in IPR2024-01436

Source: Petitioner's Updated Mandatory Notices (Dec. 16, 2024, Paper removing Mark Consilvio as backup counsel); PTAB Order Granting Patent Owner's Motion to Substitute Counsel (Oct. 24, 2025); Barco's Request for Director Review certificate of service (Apr. 22, 2026). IPR service address of record: Dentons US LLP, 233 S. Wacker Dr., Suite 5800, Chicago, IL 60606 (docketing address).

Related Yealink counsel not on the IPR mandatory notices (relevant if you are mapping the litigation defense team, and useful for identifying the same trial team):

• Victor C. Johnson (Tex. Bar No. 24029640) — Dentons US LLP, Dallas. Texas-bar-admitted lead trial counsel for Yealink in E.D. Tex. and the local/Texas face of the defense; he is not a registered practitioner on the IPR mandatory notices.
• Haley Eastham — Dentons senior managing associate, cited by Dentons as a "key contributor" at the jury trial.

Experience caveat: I could not verify the PTAB registration status or a full case history for Greenleaf, Bickham, and Gothia beyond their appearance on the Yealink–Barco matters; the biographical detail above for Yang comes from firm press materials and an IPRdaily interview, not an independent source.

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B. Barco (Patent Owner; plaintiff in the parallel litigation) — counsel of record in IPR2024-01436

Source: PTAB Order Granting Patent Owner's Motion to Substitute Counsel, Oct. 24, 2025 (granting Paper 17 in IPR2024-01436; substituting Centurelli as lead and withdrawing Thomas Lee and Amol Kavathekar); Barco's Request for Director Review, Apr. 22, 2026.

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C. Accuracy and sourcing notes

• Counsel identification is solid — it comes from the parties' own mandatory notices and certificates of service filed on the PTAB docket (and mirrored in the E.D. Tex. record at Dkt. 267), not from inference.
• Sealing: several IPR papers are sealed or redacted (Patent Owner's sealed Sur-Reply, Dec. 15, 2025; motions to seal demonstratives; Petitioner's redacted Reply and exhibits). None of the sealing, however, obscures the counsel-of-record listings.
• Posture for context: the Board issued the Final Written Decision on April 7, 2026 (Paper 62), and Barco filed a Request for Director Review on April 22, 2026; the Board denied Yealink authorization to lift the parallel reexamination stay (Apr. 20, 2026 order). Dentons' April 15, 2026 press release states the team invalidated four of the six asserted Barco patents across the IPR set, with the remaining two pushed to reexamination. These are the same Dentons and K&L Gates attorneys listed above, so any appeal to the Federal Circuit would likely continue with this team.
• What I could not verify: office locations for Greenleaf and Bickham beyond the D.C. street address used in their E.D. Tex. signature blocks; whether any additional Yealink counsel (e.g., in-house Yealink IP staff) appears on later filings; and any Federal Circuit appearance, since no notice of appeal appeared in the material I reviewed.