Unified Patents v. Zaxcom Inc

Unified Patents filed an Inter Partes Review (IPR) against Zaxcom Inc concerning U.S. Patent No. 7,711,443. Unified Patents operates as an anti-patent troll organization, seeking to deter abusive patent litigation by filing IPRs against patents frequently asserted by Non-Practicing Entities (NPEs) or to invalidate patents broadly impacting certain technologies. Zaxcom Inc is an operating company that designs and manufactures wireless audio equipment for film, television, and broadcast production. The IPR challenges the validity of claims within the '443 patent, which generally relates to a method and apparatus for simultaneously recording and transmitting digital audio signals. While there is no "accused product" directly in an IPR, such proceedings are often initiated in response to or in anticipation of patent infringement assertions in district court.

The procedural posture of this case is before the Patent Trial and Appeal Board (PTAB) as IPR2025-00230, where the Board has already instituted the review. Institution means the PTAB has determined there is a reasonable likelihood that at least one of the challenged claims is unpatentable, allowing the proceedings to move forward to a full merits review. The PTAB is an administrative body within the United States Patent and Trademark Office (USPTO) known for providing a quicker and often less expensive alternative to district court litigation for challenging patent validity.

This case is notable due to Unified Patents' role in challenging patents asserted or potentially assertable by operating companies or NPEs within specific technology areas. Unified Patents' strategy often involves targeting patents that have been or could be used in broader licensing campaigns or litigation against numerous companies. The institution of this IPR suggests that the '443 patent, or at least some of its claims, faces a significant challenge to its validity before the PTAB, which could impact Zaxcom's ability to enforce the patent in the future.

This IPR challenges the validity of Zaxcom's U.S. Patent No. 7,711,443, which broadly covers systems and methods for simultaneously recording and wirelessly transmitting digital audio signals. The patent, originally filed on July 14, 2005, and granted on May 4, 2010, is currently listed as active with an adjusted expiration date of June 10, 2028.

Here's a breakdown of the key legal developments and outcomes related to this patent:

Parallel PTAB IPR/PGR Proceedings & Their Effect on Litigation:

• Unified Patents' IPR2025-00230: Unified Patents filed an Inter Partes Review (IPR) against Zaxcom Inc. regarding U.S. Patent No. 7,711,443. This IPR has been instituted by the PTAB, meaning the Board found a reasonable likelihood that at least one challenged claim is unpatentable, and the case is proceeding to a full merits review.
• Prior IPRs and District Court Litigation by Lectrosonics: Zaxcom has a history of defending its patents, including the '443 patent and related patents, against challenges. In 2019, Zaxcom filed a patent infringement lawsuit against Lectrosonics, Inc. In response, Lectrosonics filed multiple IPRs challenging Zaxcom's patents, including U.S. Patent No. 9,336,307, which describes a system similar to the '443 patent for recording and processing audio from wireless devices.
  • On February 18, 2022, the Federal Circuit affirmed the PTAB's decision in Zaxcom, Inc. v. Lectrosonics, Inc., IPR2018-00972, which held all original claims of U.S. Patent No. 9,336,307 unpatentable but allowed Zaxcom's proposed substitute claims to be added to the patent. This demonstrates Zaxcom's willingness to vigorously defend its patents and the PTAB's role in shaping the scope of patent protection.
• Recent IPRs by RØDE/Freedman: Between December 2024 and February 2025, RØDE Microphones, LLC and its parent company, Freedman Electronics Pty Ltd, filed four separate IPR challenges against Zaxcom's wireless recording microphone technology patents.
  • On August 21, 2025, the PTAB dismissed RØDE/Freedman's challenge to U.S. Patent No. 7,929,902 entirely, finding the IPR ineligible because RØDE/Freedman had acquired Lectrosonics, Inc., which had previously challenged the same patent.
  • On September 30, 2025, the PTAB ruled in favor of Zaxcom on U.S. Patent No. 12,051,444 and denied institution of the IPR, concluding that RØDE/Freedman did not demonstrate a reasonable likelihood of prevailing.
  • Two additional challenges brought by RØDE/Freedman remain pending, with decisions expected around June 2026. These outcomes highlight the importance of IPR proceedings for Zaxcom in defending its intellectual property.
• Unified Patents' General Strategy and PTAB Trends: Unified Patents frequently files IPRs to challenge patents asserted by Non-Practicing Entities (NPEs) or those broadly impacting technology sectors. However, 2025 saw a significant increase in discretionary denials by the PTAB, influenced by new procedures and an expansion of considerations for denial, including "settled expectations" for older patents. This trend has led to an increase in procedural denials and a decrease in IPR institution rates. Unified Patents has even filed an amicus curiae brief in the Supreme Court, arguing that the PTO's unilateral actions are "choking off access to IPR and dismantling a vital scheme Congress established to ensure the integrity of the Nation's patent system." The impact of these changing PTAB dynamics on the IPR challenging the '443 patent is a key development to watch.

District Court Litigation: Zaxcom v. RØDE (D. Del.)

• Filing & Initial Pleadings: On October 31, 2023, Zaxcom, Inc. filed a patent infringement lawsuit against RØDE Microphones, LLC and Freedman Electronics Pty Ltd in the U.S. District Court for the District of Delaware (Case No. 23-1245). Zaxcom alleges that RØDE's products, including its Wireless Go II and Wireless Pro Dual-Channel Wireless Microphone Systems, infringe the '443 patent by offering devices that simultaneously record and transmit wireless audio signals. Zaxcom is seeking a permanent injunction, damages, attorneys' fees, and costs.
• Service on Freedman: Zaxcom made several attempts to serve Freedman, RØDE's Australian parent company. On May 13, 2024, the court permitted alternative service on Freedman's U.S.-based counsel under Federal Rule of Civil Procedure 4(f)(3), noting that Freedman's counsel had indicated representation for both RØDE and Freedman regarding the complaint.
• Discovery Milestones: An initial pretrial videoconference was scheduled for May 24, 2024. The parties were instructed to engage in early and meaningful discovery planning and to exchange initial disclosures under Fed. R. Civ. P. 26(a) on or before May 10, 2024.
• Present Posture: This district court litigation is ongoing in the District of Delaware, with discovery and other pre-trial proceedings underway. The IPR filed by Unified Patents against the '443 patent will likely have a significant impact on this infringement case.

This case is currently active with both the IPR at the PTAB and the district court litigation proceeding. The outcome of the IPR will be crucial for the ongoing infringement case, as an invalidation of claims in the '443 patent would significantly weaken Zaxcom's position in the district court.

Unified Patents, as an organization that initiates Inter Partes Reviews, does not operate as a traditional law firm representing clients. Instead, it acts as a "deterrence entity" that challenges patents it believes are of poor quality to discourage abusive patent litigation. Therefore, while Unified Patents employs in-house counsel, they are typically identified as "in-house counsel" for the organization itself, rather than external counsel representing a separate plaintiff in a patent infringement case.

For IPR2025-00230, which is listed in some search results as "Rode Microphones, LLC et al. v. Zaxcom, Inc." and linked to IPR2025-00230, there appears to be a discrepancy in the initial prompt identifying Unified Patents as the plaintiff. However, based on the authoritative case metadata provided ("Unified Patents v. Zaxcom Inc, IPR2025-00230"), we will focus on counsel for Unified Patents.

Unified Patents' legal team includes various in-house counsel, such as Jenn Bisk, Kyla Butler, Elaine Chow, Patrick King, Daniel Li, Roshan Mansinghani, Kelly Hughes, TJ Murphy, and Jessica L.A. Marks. These individuals act as in-house counsel for Unified Patents in their IPR proceedings. For example, Kelly Hughes and Kyla Butler are noted as representing Unified Patents in an ex parte reexamination proceeding against a patent owned by Stratacor LLC. Similarly, TJ Murphy and Jessica L.A. Marks represent Unified in another ex parte reexamination against a Wilus Wi-Fi patent. David Seastrunk and Roshan Mansinghani are also mentioned as in-house counsel for Unified in a reexamination involving Induction Devices.

While Unified Patents sometimes works with outside law firms for their IPRs, the specific counsel for IPR2025-00230 are not explicitly listed in general overviews of Unified Patents' team or recent IPR filings without a specific docket entry for this case. However, some prominent law firms, such as Quinn Emanuel Urquhart & Sullivan, LLP and Greenberg Traurig, LLP, are known to represent petitioners in PTAB cases, including those filed by Unified Patents. Duane Morris LLP also has an active intellectual property litigation practice with experience in IPRs.

Without direct access to the docket for IPR2025-00230, specific external counsel (if any) representing Unified Patents in this particular IPR cannot be definitively identified.

The defendant, Zaxcom Inc., is represented by attorneys from two law firms in IPR2025-00230: Chipperson Law Group, P.C. and O'Kelly & O'Rourke LLC.

The counsel of record for Zaxcom Inc. includes:

Chipperson Law Group, P.C.

• Rita Chipperson (Counsel)
  • Firm: Chipperson Law Group, P.C. (Morristown, New Jersey; Princeton, New Jersey; New York City, New York)
  • Experience: Chipperson Law Group has a long-standing relationship with Zaxcom Inc., having secured multiple patents for the company over nearly 15 years. Rita Chipperson's work for Zaxcom includes patent procurement and intellectual property protection.
• Morgan Golightly (Counsel)
  • Firm: Chipperson Law Group, P.C.

O'Kelly & O'Rourke LLC

• Gerard O'Rourke (Counsel)
  • Firm: O'Kelly & O'Rourke LLC
• Sean O'Kelly (Counsel)
  • Firm: O'Kelly & O'Rourke LLC
• Laura Carrig (Counsel)
  • Firm: O'Kelly & O'Rourke LLC