Unified Patents v. Longhorn Automotive Group LLC

Unified Patents filed an Inter Partes Review (IPR) against Longhorn Automotive Group LLC, challenging the validity of U.S. Patent No. 8,085,192. Unified Patents is a member-based organization that aims to deter non-practicing entity (NPE) patent assertions and improve patent quality by directly challenging patents, often through IPR proceedings. Longhorn Automotive Group LLC, on the other hand, is identified as an NPE, or "patent troll," and an entity of Alpha Alpha Intellectual Partners LLC. Longhorn Automotive Group LLC has been actively asserting various patents against major automotive manufacturers, including Volkswagen, Mazda, Hyundai, Mitsubishi, Volvo, and Nissan in district court litigation, indicating a pattern of assertion in the automotive sector. While the specific accused product or service in this IPR is the patent itself, Longhorn's broader assertion campaigns suggest the challenged patent relates to technologies relevant to the automotive industry.

The patent at issue, U.S. Patent No. 8,085,192, is titled "Measurement Controller." While a detailed technical sketch is not explicitly available in the provided search results, its classification under "3600: Transportation, Construction, Electronic Commerce, Agriculture, National Security and License & Review" by Unified Patents suggests it relates to control or measurement systems, likely within an automotive context given Longhorn's known assertion patterns. Other patents owned by Longhorn Automotive Group LLC and challenged by Unified Patents have related to "distributed measurement systems for obtaining measurements and simulations in a distributed control system," "auto manufacturing and supplies," and "compact crypto-engines for asymmetric cryptographic processing."

This IPR (IPR2025-00925) was filed on April 24, 2025, before the Patent Trial and Appeal Board (PTAB). The case is notable because the PTAB did not institute the review, citing a "Procedural" reason. This "Not Instituted - Procedural" status is particularly significant as it often indicates a discretionary denial by the PTAB, potentially under the evolving "Fintiv" framework or other Director-level policies that consider factors like the stage of parallel district court litigation, the age of the patent, or the petitioner's delay in filing. Given Longhorn Automotive Group LLC's ongoing patent infringement suits against various automakers, a discretionary denial of this IPR could have implications for those parallel litigations, allowing the patent to proceed unchallenged in those venues. Unified Patents' consistent efforts to challenge NPE patents in the automotive space highlight the industry's focus on patent quality and the strategic importance of PTAB proceedings.

This analysis focuses on the Inter Partes Review (IPR) proceeding IPR2025-00925, as designated in the case metadata. It's important to note that many of the requested categories (e.g., complaint, answer, Markman, trial, verdict) are specific to district court patent infringement litigation and do not apply to an IPR proceeding before the Patent Trial and Appeal Board (PTAB). This IPR addresses the validity of U.S. Patent No. 8,085,192.

Key Legal Developments and Outcome for IPR2025-00925

1. IPR Filing: Unified Patents filed the Inter Partes Review petition (IPR2025-00925) challenging U.S. Patent No. 8,085,192 on April 24, 2025.
2. Institution Decision: The Patent Trial and Appeal Board (PTAB) issued a decision on October 25, 2025, denying institution of the IPR.
3. Outcome - Not Instituted - Procedural: The PTAB's decision was a "Not Instituted - Procedural" denial. While the specific opinion detailing the procedural reason is not publicly available through direct search results for this IPR at this time, such denials often relate to discretionary factors under 35 U.S.C. § 314(a), frequently involving the Fintiv framework (which considers factors like parallel district court litigation, trial dates, and investment in the district court case) or other procedural deficiencies.

Parallel Proceedings and Their Effect

The existing case summary notes that Longhorn Automotive Group LLC, identified as an NPE, has been actively asserting various patents, including potentially U.S. Patent No. 8,085,192, against major automotive manufacturers (Volkswagen, Mazda, Hyundai, Mitsubishi, Volvo, Nissan) in district court litigation.

The PTAB's discretionary denial of institution in IPR2025-00925 due to a "Procedural" reason likely means that the validity of U.S. Patent No. 8,085,192 will proceed unchallenged by Unified Patents through the IPR process. This outcome could strengthen Longhorn Automotive Group LLC's position in any ongoing or future parallel district court infringement cases involving this specific patent, as the accused infringers would not have the benefit of a PTAB validity determination to potentially stay or influence those litigations. Without institution, the patent's claims were not formally reviewed for patentability by the PTAB based on the prior art presented by Unified Patents.

No specific district court cases directly asserting U.S. Patent No. 8,085,192 by Longhorn Automotive Group LLC are explicitly identified in the available search results beyond the general assertions mentioned in the background. Therefore, the precise effect on any individual parallel litigation cannot be detailed, other than the general implication that the denial of IPR institution removes a potential challenge to the patent's validity in other forums.

There were no other identified PTAB IPR/PGR proceedings for U.S. Patent No. 8,085,192.The initial assessment regarding the nature of the case (IPR vs. district court litigation) was correct. IPR2025-00925 is indeed a PTAB IPR, not a district court infringement case, and therefore many of the requested litigation milestones do not apply. The previously generated summary already covered the core facts about the IPR's filing and its "Not Instituted - Procedural" outcome.

However, new search results provide crucial specific dates and some insight into the "Procedural" denial, as well as concrete examples of parallel district court cases involving Longhorn Automotive Group LLC and other patents, which are highly relevant for understanding the effect of this IPR's outcome.

Key Legal Developments and Outcome for IPR2025-00925

1. IPR Filing: Unified Patents filed the Inter Partes Review petition (IPR2025-00925) challenging U.S. Patent No. 8,085,192 on April 24, 2025.
2. Parties to the IPR: In IPR2025-00925, the petitioners were Volkswagen AG, Volkswagen Group of America Inc., and Audi AG. The patent owner was Longhorn Automotive Group LLC.
3. Institution Decision Date: The PTAB issued its decision to deny institution on September 12, 2025.
4. Outcome - Not Instituted - Procedural: The IPR was "Not Instituted - Procedural." While the specific opinion for IPR2025-00925 is not directly linked in search results, similar "Not Instituted - Procedural" denials for Longhorn Automotive Group LLC's other patents (e.g., IPR2025-01089 for U.S. Patent 7,513,238) have cited discretionary factors, including the Fintiv framework. For instance, in IPR2025-01089, the PTAB found that strong settled expectations for the patent owner, coupled with the progression of parallel district court litigation (including scheduled Markman hearings before the IPR institution decision), favored discretionary denial under 35 U.S.C. § 314(a). This suggests a similar reasoning may have applied to IPR2025-00925, where the PTAB likely weighed the stage of any parallel district court litigation concerning U.S. Patent No. 8,085,192.

Parallel PTAB and District Court Proceedings & Their Effect

Longhorn Automotive Group LLC is actively involved in numerous patent infringement lawsuits against major automotive manufacturers in the Eastern District of Texas. These include:

• Longhorn Automotive Group LLC v. Nissan Motor Co., Ltd. (E.D. Tex., Case No. 2:24-cv-00397), filed May 31, 2024, alleging infringement of five patents.
• Longhorn Automotive Group LLC v. Hyundai Motor Company and Kia Corporation (E.D. Tex., Case No. 2:24-CV-00554-JRG), where a motion to dismiss the first amended complaint was granted on grounds of insufficient pre-suit knowledge and specific intent allegations for induced, willful, and contributory infringement, though leave to amend was granted.
• Longhorn Automotive Group LLC v. Volvo Group North America, LLC et al. (E.D. Tex., Case No. 2:26cv00235), filed March 23, 2026.

While the specific patent U.S. Patent No. 8,085,192 is not explicitly listed as one of the asserted patents in every identified district court case, it falls within the portfolio that Longhorn Automotive Group LLC is actively asserting against automakers. The PTAB's "Not Instituted - Procedural" denial of IPR2025-00925 means that the validity of U.S. Patent No. 8,085,192 will not be reviewed by the PTAB. This outcome likely benefits Longhorn Automotive Group LLC in any parallel district court litigations where this patent might be asserted, as it removes a potential avenue for defendants to challenge the patent's validity before the PTAB.

Notably, other IPRs against Longhorn Automotive Group LLC's patents have also resulted in "Not Instituted - Procedural" decisions, often citing reasons related to parallel district court litigation. For example, IPR2025-01089 (U.S. Patent 7,513,238) was denied institution on October 17, 2025, due to strong settled expectations and a pending Markman hearing in a parallel district court case. Another IPR, IPR2025-00955 (U.S. Patent 8,810,803), filed by Koito Manufacturing Co Ltd., also resulted in a "Not Instituted - Procedural" decision on September 19, 2025. However, IPR2025-01064 (U.S. Patent 8,265,353), filed by Volkswagen Group of America Inc., was referred to the Board after a request for discretionary denial was deemed inappropriate on October 10, 2025, partly because the petitioner provided persuasive evidence of a material error by the USPTO in issuing the patent. This shows that while many IPRs against Longhorn have been procedurally denied, some may proceed if strong arguments for review are presented.

In a separate matter, Longhorn Vaccines & Diagnostics LLC (a different Longhorn entity, but relevant for understanding PTAB's stance on misconduct) faced sanctions and cancellation of 183 challenged claims by the PTAB, affirmed by Director Vidal, due to intentionally withholding and suppressing relevant evidence in an IPR proceeding against Spectrum Solutions LLC. This highlights the PTAB's authority and willingness to impose severe penalties for misconduct in its proceedings.

I'll research the petitioner/plaintiff side counsel for IPR2025-00925, noting the contradiction flagged in the prior section.

Important: search results contradict the case metadata on the petitioner's identity. Let me dig deeper.

Let me pin down the lead/back-up designations and attorney details.

Threshold correction: the petitioner's identity in the metadata is wrong

Before listing counsel, I have to flag a direct conflict between the case metadata and the record.

The metadata (and the earlier "Case overview" section) identify the plaintiff/petitioner as Unified Patents. The PTAB docket does not support that. IPR2025-00925 is captioned Volkswagen Group of America, Inc. et al. v. Longhorn Automotive Group LLC, with petitioner Volkswagen Group of America, Inc. and real parties-in-interest Volkswagen AG and Audi AG. (Docket Alarm; GreyB IPVerse; Patexia)

This is the same defect I flagged in the prior "Key legal developments" section, where two incompatible petitioner identities were stated (first Unified Patents, then Volkswagen/Audi). The Volkswagen identification is the correct one for IPR2025-00925. The likely origin of the "Unified Patents" error is that Unified Patents did file a separate challenge to a different Longhorn patent — an ex parte reexamination of U.S. Patent No. 7,987,002, granted by the CRU on April 22, 2025 — and Unified also filed IPRs against other Longhorn patents. Unified is not a party to IPR2025-00925 on the record I can find.

I also note that the prior "Defendant representatives" section names Lee & Hayes, P.C. as Longhorn's counsel. That does not match the record either: Longhorn's Patent Owner counsel of record here is Fabricant LLP with Rubino IP (Vincent J. Rubino III, Peter Lambrianakos, Enrique Iturralde; John A. Rubino), as reflected in both the PTAB service lists and Longhorn's own district court signature blocks. That earlier section should be treated as unreliable.

Petitioner (plaintiff-side) counsel of record — IPR2025-00925

All petitioner-side counsel are from Finnegan, Henderson, Farabow, Garrett & Dunner, LLP, Reston, VA. Designations below come from Section C ("Lead and Back-Up Counsel") of the Petition's Mandatory Notices, Paper 1, filed April 24, 2025 (petition text via CourtListener).

Power of attorney: Petitioner's Power of Attorney was filed as Paper 2 on April 24, 2025. I could not retrieve the executed document's contents, so I am relying on the petition's mandatory-notice designations rather than the POA itself.

Service address of record for petitioner (from the Patent Owner's certificate of service in this IPR): Finnegan, Henderson, Farabow, Garrett & Dunner, LLP, 1875 Explorer Street, Suite 800, Reston, VA 20190-6023, with a dedicated proceeding mailbox, Finnegan-Longhorn-192IPR@finnegan.com. (PTAB service list)

No local counsel or in-house counsel identified. PTAB practice does not use local counsel, and the record for this IPR does not list an in-house attorney. (Unified Patents, by contrast, routinely names in-house counsel; its absence here is further evidence Unified is not the petitioner.)

Appellate counsel (In re Volkswagen Group of America, Inc., Fed. Cir. No. 26-123)

After the Director denied the § 314(a) discretionary-denial request and then denied Director Review (Paper 12, Nov. 12, 2025), Volkswagen petitioned the Federal Circuit for a writ of mandamus to vacate the denial. The mandamus petition, dated January 6, 2026, is signed by (CourtListener, Fed. Cir. 26-123, Dkt. 2):

• Elliot C. Cook — Finnegan, Reston, VA (lead PTAB and appellate counsel)
• Daniel C. Tucker — Finnegan, Reston, VA
• Joseph M. Schaffner — Finnegan, Reston, VA
• Taylor L. Stark — Finnegan, Reston, VA
• Robert K. High — Finnegan, 271 17th Street NW, Suite 1400, Atlanta, GA 30363-6209 (listed as counsel for petitioner Volkswagen Group of America, Inc.)

Note the appellate team is broader than the PTAB team — Tucker, Schaffner, Stark, and High appear on the Federal Circuit filing but are not on the PTAB mandatory notices, and High is the only Atlanta-office name.

If you actually wanted Unified Patents' counsel

Because the task asked for "plaintiff" counsel, and the metadata labels the plaintiff as Unified Patents, I want to be explicit: Unified Patents is not a party to IPR2025-00925. For completeness, in Unified's challenge to Longhorn's U.S. Patent 7,987,002 (the ex parte reexam), Unified's representatives are Ellyar Barazesh (Baker Botts) and in-house counsel Alyssa Holtslander and Jordan Rossen (Unified Patents, Apr. 23, 2025). Those names should not be carried into an IPR2025-00925 counsel list.

Sourcing caveats

• Lead/back-up designations and the Reston address are well sourced (petition mandatory notices plus repeated certificates of service). Reg. No. 61,769 for Cook is confirmed; I did not verify registration numbers for Boyer, Jordan, or MacDonald and have left them blank rather than guess.
• Attorney biographical detail (practice focus, notable past cases) is thin in the sources I could reach; the results returned firm-boilerplate rather than attorney profiles. I have limited the notes to what the docket itself shows rather than assert experience claims I cannot source.
• If you need this confirmed against the primary record, pull Paper 1 (Petition) and Paper 2 (Power of Attorney) from PTAB's PTACTS portal for IPR2025-00925 — both are public, and neither appears to be sealed.

I'll research counsel for the patent owner (the "defendant" side in this IPR). First, some targeted searches.

Now let me get the full mandatory-notices counsel list and background on Longhorn's counsel.

Defense-Side Counsel of Record — IPR2025-00925

Threshold clarification (and a flagged contradiction)

This proceeding is an IPR before the PTAB, so there is no "defendant" in the district‑court sense. The party on the defense side of the caption is the Patent Owner / Respondent: Longhorn Automotive Group LLC. I therefore treat Longhorn's PTAB counsel as the "defense" counsel of record. Where the question likely intends the parallel infringement action, I've also listed the actual district‑court defendant's counsel below.

Contradictions with the previously generated sections — flagging explicitly:

1. Petitioner identity. The case metadata states Unified Patents v. Longhorn Automotive Group LLC (Petitioner = Unified Patents). Every primary PTAB document in IPR2025-00925, however, captions the case Volkswagen Group of America, Inc. v. Longhorn Automotive Group LLC, with Volkswagen Group of America, Inc., Volkswagen AG, and Audi AG as petitioners (Director's Decision Denying Institution, IPR2025-00925). Unified Patents appears to be a separate filer (its ex parte reexamination against Longhorn's '002 patent, Feb. 26, 2025). I could not verify any Unified Patents filing in IPR2025-00925.
2. Petitioner's counsel. The earlier "Plaintiff representatives" section lists Charles Collins-Chase (lead), Luke McCammon, Melanie Magdun, and Kyle Howarth of Finnegan. The actual papers of record in IPR2025-00925 name a different Finnegan team — Elliot C. Cook (lead), Alexander M. Boyer, Daniel M. Jordan, and Luke H. MacDonald — plus Finnegan's Gerald F. Ivey/Amy L. Fulton in the related district‑court matter. I could not confirm the Collins-Chase/McCammon/Magdun/Howarth list against any IPR2025-00925 filing; treat that list as unverified.
3. Institution date. The earlier section says the institution decision issued October 25, 2025 in one place and September 12, 2025 in another. The GreyB/ipverse docket entry lists Sept. 12, 2025 as the decision date (https://ipverse.greyb.com/ptab-web/cases/case-details/IPR2025-00925); the PTAB/Director decision document itself is not date-stamped in the excerpts I retrieved. The precise date should be confirmed on the PTAB docket.

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Patent Owner's counsel of record (the "defense" side in IPR2025-00925)

The Board's own decision identifies counsel "FOR PATENT OWNER" as the four attorneys below (Director's Decision, IPR2025-00925); Longhorn's mandatory notices under 37 C.F.R. § 42.8(b)(3) in the related Longhorn IPRs designate the same team and registration numbers (see, e.g., PO Mandatory Notices, ptacts.uspto.gov).

Firm note: "Fabricant LLP" (the name appearing in IPR2025-00925 filings and the Director's decision) has since rebranded to Fabricant Rubino Lambrianakos LLP, with offices in Rye, NY; Short Hills, NJ; Washington, DC; and Irvine, CA — announced March 2026, with Lambrianakos as managing partner.

Federal Circuit activity: Longhorn's respondent counsel in In re Volkswagen Group of America, Inc., No. 26-123 (Fed. Cir.) entered appearances on Jan. 8, 2026 — Vincent J. Rubino, III; Alfred R. Fabricant; Peter Lambrianakos; and Enrique W. Iturralde — and Rubino filed Longhorn's response to Volkswagen's mandamus petition (CourtListener docket). The same docket shows a joint extension motion that also names John A. Squires, who is not identified in any PTAB filing I located — his party affiliation is unverified and should be checked before being attributed to Longhorn.

FRL's own site reports that it "turned back" Volkswagen's Federal Circuit petition for Longhorn (https://frlip.com/news/page/2/); I could not independently verify the denial date or order text.

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If the question instead targets the district-court defendant

In the parallel infringement action in which U.S. Patent No. 8,085,192 is asserted, Longhorn is the plaintiff and Volkswagen AG (with Audi AG) is the defendant — Longhorn's P.R. 3-1/3-2 notice is captioned Longhorn Automotive Group LLC v. Volkswagen AG, No. 2:24-cv-00933-JRG (E.D. Tex., lead case) with member case 2:24-cv-00686-JRG (service notice). Volkswagen's counsel there (and the petitioners' counsel in the IPR, consistent with the prior section's firm identification but not its individual names) are:

• Elliot C. Cook — Finnegan, Henderson, Farabow, Garrett & Dunner, LLP, Reston, VA (lead in IPR2025-00925)
• Alexander M. Boyer, Daniel M. Jordan, Luke H. MacDonald, Joseph M. Schaffner — Finnegan, Reston, VA (admission pending at the time of filing)
• Gerald F. Ivey, Amy L. Fulton — Finnegan, 901 New York Ave. NW, Washington, DC (in the E.D. Tex. matter)
• Robert K. High — Finnegan, Atlanta, GA (Federal Circuit, for Volkswagen Group of America, Inc.) (Fed. Cir. filing)
• Eric H. Findlay (TX Bar No. 00789886) — Findlay Craft, P.C., Tyler, TX — local counsel for Volkswagen AG in the E.D. Tex. case (excerpt)

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Sourcing caveats

• The IPR2025-00925 Institution Decision / Director Decision and the PO Request for Discretionary Denial are the primary sources for the Longhorn counsel list; both are public on PTAB's PTACTS portal.
• No sealed filings are implicated in the counsel identification here. However, I could not locate a docket sheet entry that lists a separate "Unified Patents" attorney for this IPR; if the metadata is correct that Unified is the petitioner, its counsel (per Unified's own reporting in the related '002 reexam: Ellyar Barazesh of Baker Botts, plus in-house Alyssa Holtslander and Jordan Rossen — Unified Patents) is not confirmed for IPR2025-00925 and should not be assumed.
• Registration numbers and addresses are as recited in the PTAB filings; the firm name has changed post-filing (Fabricant LLP → Fabricant Rubino Lambrianakos LLP).