Litigation
Untitled case
PendingIPR2026-00208
Patents at issue (1)
Plaintiffs (1)
Summary
This is an Inter Partes Review (IPR) case filed by Unified Patents at the Patent Trial and Appeal Board (PTAB) concerning US patent 9578092, with a filing year implied as 2026 and currently pending.
Case overview & background
Plain-language overview of the case: parties, accused product, patents at issue, and why the suit matters.
I'll research this case across multiple angles to build an accurate overview.
Key finding: the petitioner appears to be Cisco, not Unified Patents. Let me verify and dig into background.
Case Overview and Background
⚠️ Metadata conflict to flag first
The case metadata in this prompt (Plaintiff: Unified Patents; patent 9,578,092; IPR2026-00208) conflicts with every primary-source trace I could find for that proceeding number. IPR2026-00208 is captioned Cisco Systems, Inc. v. Damaka, Inc., filed January 13, 2026, challenging all 30 claims of U.S. Patent No. 9,578,092 (Ex Parte AI case page; Arctic Invent). Unified Patents appears in this record only as a litigation-tracking portal — its site hosts the parallel docket for the underlying E.D. Tex. case (portal.unifiedpatents.com) — which is the most likely source of the metadata error. The previously generated "Key legal developments" section repeats this error (it names Unified Patents as petitioner and concludes no district court case exists); the earlier "Defendant representatives" section is the more accurate one on this point. Per the operating rules I defer to metadata for party names, but where metadata is contradicted by the docket itself, I flag it rather than propagate it. Bottom line: the real petitioner is Cisco; the real patent owner is Damaka. Everything below is drawn from the Cisco–Damaka filings.
The parties and the accused technology
Damaka, Inc. is not a classic shell NPE. It is a Texas corporation (Richardson, TX) founded in 2004 by Siva Chaturvedi (CEO) and Satish Gundabathula (CTO), originally a peer-to-peer VoIP/softphone pioneer (its "Personal Softswitch" used SIP and P2P architecture) and today a small unified-communications-and-collaboration (UCC) vendor selling SDKs and products branded Nirvana, Moca, Triton, and Vcare (2005 GIPS press release; Chaturvedi Declaration, Ex. 2004 in IPR2026-00209; company profile data at Kona Equity puts it at ~63 employees / ~$22M revenue — figures I treat as unverified). Chaturvedi's declaration asserts Damaka's products were "designed and architected in the United States" and "directly compete with Cisco's WebEx product." That fact pattern — a domestic operating company asserting patents against a larger competitor — is highly relevant to the March 2026 Squires discretionary-denial regime discussed in the prior section, and likely explains the outcome here. Cisco Systems, Inc. is the accused infringer and IPR petitioner: a global networking/communications operating company whose Webex platform and Webex SDKs are the accused instrumentalities. The parallel suit, Damaka, Inc. v. The Cigna Group et al. (2:25-cv-00594), accuses Cigna's MDLIVE telehealth application — same patent family, different industry vertical (Unified Patents portal; RPX news).
The patents and the technical sketch
Damaka asserts a common-specification family: U.S. 9,027,032 ('032), 9,578,092 ('092), 9,270,744 ('744), 11,576,046 ('046), 11,930,362 ('362), and 12,279,116 ('116) against Cisco (five of the six against Cigna) (RPX). The '092 patent at issue in IPR2026-00208 is titled "Providing Additional Functionality to Existing Software" and claims a modular software architecture: a host "superblock application" invokes a separately stored "function block" (specifically contemplated as an API-accessible SDK) to add audio/video call capability — authorization checks, an external resource, simultaneous picture-in-picture video, and audio — without a context switch to another application, and notably where establishing the A/V call "is not supported by the superblock application" (claim mapping from the district court complaint). One-line sketches of the sibling patents: the '032 claims the same superblock/function-block A/V method (independent claim 15 is the representative claim per the Cigna §101 briefing); the '744 covers modular video-conferencing functionality; the '046 and '362 cover related modular A/V-collaboration features; and the '116 covers modular video-conferencing software with 55 claims challenged. The technical fight across all of them is whether Cisco's app-plus-SDK architecture maps to "superblock" + "function block," and whether Webex "supports" A/V calls natively (which would defeat the negative limitation). Cisco's IPR grounds in 00208 attack all 30 claims as obvious over Abuan (US 2011/0249077), Guzman (US 2012/0092438), Lawson (US 2013/0019297), and Ludwig (U.S. 5,689,641) (Ex Parte petition analysis).
Procedural posture and why it matters
The underlying litigation is Damaka, Inc. v. Cisco Systems, Inc., No. 2:25-cv-00593 (E.D. Tex., Marshall Division), filed May 30, 2025, with Judge Robert W. Schroeder III presiding and Magistrate Judge Roy S. Payne handling pretrial/scheduling (Justia docket; the case number appears as 2:25-cv-00593-RWS-RSP in the IPR exhibits). Damaka's infringement contentions issued November 13, 2025, Cisco served preliminary invalidity contentions January 15, 2026, a scheduling conference was held November 13, 2025, and Markman/jury dates were set. Cisco's motion to dismiss the amended complaint in the Cigna companion case on §101 grounds was denied without prejudice (2:25-cv-00594-JRG memorandum opinion). On the PTAB side, Cisco filed six parallel IPRs on January 13, 2026 — IPR2026-00206 ('032), -00207 ('744), -00208 ('092), -00210 ('362), plus -00209 and -00211 — and on May 6, 2026 the Board denied institution in all of them, including 00208, on discretionary grounds under §314(a) (consolidated denial order; Ex Parte status page: "Discretionary Denial," institution 05/06/26). Counsel of record: Fabricant LLP (Alfred R. Fabricant, Jacob Ostling, et al.) for Damaka; Cisco's PTAB counsel includes Theodore Foster (IPVerse IPR2026-00207) with Melissa Smith and Brian Nash appearing in the district court case. Venue matters because E.D. Tex.–Marshall is one of the highest-volume patent venues in the country, and Judge Schroeder's docket is a known NPE/operating-company battleground; the discretionary denials also matter because they leave Cisco without PTAB cover in the district court case. The case is notable for three reasons: (1) it is a rare operating company vs. operating company communications-software dispute rather than a classic PAE campaign, with Damaka asserting domestic design/development against Cisco's Webex; (2) the six-IPR, all-denied cluster is a leading illustration of the post-Squires-memo discretionary-denial wave — the 64% FY2026 discretionary-denial figure cited in the prior section fits this pattern; and (3) the outcome is a market-relevant datapoint on whether a small U.S. collaboration-software vendor can use patent litigation to pressure Webex, with the §101 eligibility question still open in the parallel Cigna (MDLIVE) case. Unsourced/uncertain items I could not confirm: the exact discretionary ground (e.g
Key legal developments & outcome
Major rulings, motions, claim construction, settlements, and the present posture or final disposition.
Key Legal Developments and Outcome for IPR2026-00208
This case, IPR2026-00208, is an Inter Partes Review (IPR) proceeding filed by Unified Patents against Damaka Inc., concerning U.S. Patent No. 9,578,092. The case was filed at the Patent Trial and Appeal Board (PTAB) and its primary development has been the denial of institution.
Chronological Summary of Legal Developments:
Filing of IPR Petition (2026-01-13): Unified Patents filed a petition for Inter Partes Review (IPR) challenging U.S. Patent No. 9,578,092 on January 13, 2026. The patent owner is Damaka Inc. The patent falls under Technology Center 2100, which covers Computer Architecture, Software, and Information Security.
Institution Decision - Institution Denied (2026-05-06): On May 6, 2026, the Patent Trial and Appeal Board issued a decision denying institution of the IPR. The status of the case is "Not Instituted - Procedural."
The "procedural" nature of the denial likely reflects the increasingly common discretionary denials by the PTAB. In March 2026, USPTO Director John Squires issued a memorandum establishing new discretionary factors for IPR and Post-Grant Review (PGR) proceedings. These factors include consideration of domestic manufacturing presence, investment in American manufacturing operations, and the petitioner's small business status. These new considerations have contributed to a significant decline in the overall IPR institution rate, with 64% of petitions being denied based on discretionary considerations in fiscal year 2026 year-to-date. Unified Patents has also faced previous institution denials related to Real Party-In-Interest (RPI) issues. While the specific order for IPR2026-00208 is not publicly detailed to confirm the exact discretionary ground, the "procedural" outcome aligns with these recent trends at the PTAB.
Outcome:
The IPR was not instituted, meaning the proceeding did not advance to the trial phase where the merits of the patentability challenge would be adjudicated. As institution was denied, there have been no further legal developments within this IPR such as claim construction, discovery, trial, or post-trial motions.
Parallel Proceedings:
Searches for district court litigation involving U.S. Patent No. 9,578,092 did not yield any specific cases. Since the IPR was denied institution, it would not have led to a stay or direct impact on any potential parallel district court litigation.
Plaintiff representatives
Counsel of record for the plaintiff(s): attorneys, firms, and roles (lead counsel, of counsel, local counsel).
As of May 29, 2026, the specific counsel of record representing Unified Patents in IPR2026-00208 cannot be definitively identified from the available public search results. The official PTAB docket for IPR2026-00208, which would list the specific attorneys who filed the petition, is not directly accessible through the conducted web search.
However, based on Unified Patents' past Inter Partes Review (IPR) cases and their organizational structure, their legal representation typically includes a combination of their in-house legal team and various outside patent litigation firms.
In other IPR proceedings, Unified Patents has been represented by:
- Jonathan Stroud (in-house counsel) - COO & CLO at Unified Patents. He is involved in managing patent office proceedings.
- Roshan Mansinghani (in-house counsel) - Head of Operations at Unified Patents. He has been involved in various IPR proceedings as in-house counsel.
- Jordan Rossen (in-house counsel) - Senior Patent Counsel at Unified Patents, preparing and litigating post-grant proceedings before the PTAB. Previously practiced intellectual property litigation at Ropes & Gray and Paul Hastings.
- Kelly Hughes (in-house counsel) - Senior Patent Counsel at Unified Patents. Also noted as Trademark Managing Counsel in one instance.
- Jason R. Mudd (Lead Counsel) - Attorney at Erise IP, P.A., based in Overland Park, Kansas, and Greenwood Village, Colorado. He has been designated as lead counsel in other IPRs for Unified Patents.
- Eric A. Buresh (Counsel) - Attorney at Erise IP, P.A., with offices in Overland Park, Kansas, and Greenwood Village, Colorado.
- Finnegan, Henderson, Farabow, Garrett & Dunner, LLP (outside counsel) - Unified Patents has used Finnegan for representation in IPRs.
- Haynes and Boone (outside counsel) - Attorneys such as Jon Bowser, Angela Oliver, Michael McCarty, and Matt Beck (now at Unified Patents) from Haynes and Boone have represented Unified Patents in some proceedings.
Given that IPR2026-00208 has been noted as "Not Instituted - Procedural", it is possible that the initial filing involved a core team of Unified Patents' in-house counsel working with or through an external firm that regularly handles their PTAB petitions. However, without direct access to the filing documents for this specific IPR, the exact individuals and their roles cannot be confirmed.
Defendant representatives
Counsel of record for the defendant(s): attorneys, firms, and roles (lead counsel, of counsel, local counsel).
- Fabricant
- Jacob Ostling · Lead Counsel
- Alfred R. Fabricant · Back-up Counsel
- Richard Cowell · Back-up Counsel
- Joseph M. Mercadante · Back-up Counsel
In the Inter Partes Review (IPR) case IPR2026-00208, the patent owner is Damaka, Inc., and the petitioner is Cisco Systems, Inc.. While Unified Patents tracks and lists IPRs, they are not the petitioner in this specific case. The status of IPR2026-00208 is "Institution Denied" as of May 6 or 7, 2026, meaning the PTAB decided not to institute a full review of the patent.
Counsel of record representing Damaka, Inc. (Patent Owner) in IPR2026-00208, and in related IPRs filed by Cisco Systems, Inc. against Damaka, Inc. concerning similar patents, include attorneys from Fabricant LLP:
Jacob Ostling
- Role: Lead Counsel
- Firm: Fabricant LLP, Rye, New York
- Note: Mr. Ostling is listed as counsel for Damaka, Inc. in IPR2026-00208 and as Lead Counsel for Damaka, Inc. in related IPRs, such as IPR2026-00206 and IPR2026-00211, both involving Cisco Systems, Inc. and Damaka, Inc.. His practice focuses on patent litigation and inter partes review proceedings.
Alfred R. Fabricant
- Role: Back-up Counsel (subject to motion to appear pro hac vice)
- Firm: Fabricant LLP, Rye, New York
- Note: Mr. Fabricant is a founding partner of Fabricant LLP and has extensive experience in patent litigation and IPR proceedings, representing both patent owners and petitioners. He is listed as back-up counsel for Damaka, Inc. in related IPRs.
Richard Cowell
- Role: Back-up Counsel
- Firm: Fabricant LLP, Rye, New York
- Note: Mr. Cowell is listed as back-up counsel for Damaka, Inc. in related IPRs, such as IPR2026-00211. His practice focuses on patent litigation.
Joseph M. Mercadante
- Role: Back-up Counsel
- Firm: Fabricant LLP, Rye, New York
- Note: Mr. Mercadante is listed as back-up counsel for Damaka, Inc. in related IPRs, such as IPR2026-00211. His experience includes patent prosecution and litigation.