Diserio Martin O'Connor & Castiglioni

Let me verify the tracked patent case and firm size/rankings.

Let me verify the Altair representation and check for PTAB/IPR activity.

Diserio Martin O'Connor & Castiglioni LLP — Patent Litigation Profile

Firm overview. Diserio Martin O'Connor & Castiglioni LLP ("DMOC") is a full-service regional firm founded in 1983 by four partners who left a larger Connecticut practice. Its headquarters is in Stamford, Connecticut (1010 Washington Blvd., Suite 800), with additional offices listed at New Canaan and Greenwich, CT plus Boston, White Plains, and Naples, FL on the firm's website; third-party directories have variously described the footprint as three to seven offices, so the exact count is not reliably fixed. Size indicators vary by source — the firm lists roughly 30 attorneys; BCG Search reports 23 attorneys (22 in Stamford, with 3 in IP and 10 in litigation); Martindale lists an 18-attorney Stamford office. DMOC is best characterized as a regional full-service firm, not a BigLaw firm or an IP boutique. No AmLaw or Chambers ranking for the firm surfaced in this review, and none should be assumed.

IP litigation specialty. The firm's Intellectual Property Practice Group is described as full-service: trademark, copyright, patent prosecution and counseling, patentability and freedom-to-operate studies, TTAB oppositions and cancellations, anti-counterfeiting, domain names, licensing, and federal IP enforcement and litigation. The technology profile is consumer- and brand-facing rather than semiconductor or standards-based: cosmetics and personal care, consumer goods, eyewear, publishing and literary/character rights, prepaid gift-card and electronic transaction processing, industrial lasers, cable/navigation devices, and software — as described in the bio of its former IP chair. The only tracked patent case is mechanical/consumer-product eyewear technology, consistent with that profile.

Side preference. The tracked record shows one appearance, and it is on the defense side (0 plaintiff / 1 defendant). The firm's own practice page, however, states that it represents both plaintiffs and defendants in federal IP litigation, and its docket history skews toward defending retail, interior-design, and veterinary clients in copyright suits brought by photographers and archives. On the patent side specifically, there is no public evidence of a plaintiff-side or NPE/PAE assertion practice; the available data supports a defense-leaning, brand/IP-owner representation mix rather than contingency patent monetization.

Notable cases. The single tracked matter is Aspex Eyewear, Inc. et al. v. Altair Eyewear, Inc. (S.D.N.Y.), a magnetic clip-on eyewear patent dispute involving the '054, '811, and '896 patents. Public court records show the district court granted the defendant summary judgment of non-infringement in April 2007, construing "frame" to require rims and treating the "retaining mechanism" limitation as means-plus-function, and the Federal Circuit affirmed on those points in a nonprecedential 2008 ruling (Nos. 2007-1380, -1407). Note two caveats: the frequently cited Federal Circuit opinion Aspex Eyewear v. Marchon Eyewear, 672 F.3d 1335 (Fed. Cir. 2012), is a different case involving different defendants and should not be attributed to this firm's tracked appearance, and the listing of Matthew C. Wagner for the defendant is drawn from the case database rather than from an independently verified appearance of record in this review.

PTAB / IPR practice and practice leaders. No public record of IPR, PGR, or CBM filings by the firm surfaced, and no reported IPR volume figures exist; the firm's USPTO trial work appears concentrated at the TTAB, where a partner has appeared as counsel (e.g., Opposition No. 91226267, on behalf of Truveris, Inc.). That should be treated as an absence of evidence, not proof of absence. On leadership, the most prominent IP name historically is Matthew C. Wagner, who chaired the firm's IP Practice Group from roughly 2010 to 2018 and was reported in January 2019 as leaving to become General Counsel of PDC Brands — meaning he is unlikely to remain an active firm partner today, despite appearing in the tracked case record. Current IP-side names that can be sourced are Christina L. Winsor (IP litigation, including copyright defense work), Scott M. Harrington (business and IP litigation), Samantha L. Garrison Gonzalez (IP litigation), and Danielle B. Charlot, though the firm's partner roster has shifted and individual current titles should be confirmed directly with the firm.