Daniel B. Ravicher

Daniel B. Ravicher — Patent Litigation Practice Summary

Specialty and side. Ravicher's practice spans IP and technology litigation across pharmaceuticals, biotechnology, medical devices, semiconductors, telecommunications, software, and consumer electronics (Zeisler PLLC firm bio). His career skews toward public-interest, plaintiff-side challenges to patents — gene patents, genetically modified seed patents, and patents affecting AIDS medicines and Internet standards — though he has also defended accused infringers, including the NYC Transit Authority in NPE suits. The tracked appearance data (one case) reflects a single plaintiff-side, lead-counsel matter at Zeisler; the case itself is unnamed in the source data, so it cannot be identified here. His firm biography confirms he represents both IP rights holders and accused infringers.

Firm context and notable matters. Ravicher is a Member of Zeisler PLLC (Miami/NY), which he joined in 2021 after directing the Public Patent Foundation (PUBPAT), the nonprofit he founded, and serving as Legal Director on the founding team of the Software Freedom Law Center. Earlier firm stints included Patterson Belknap Webb & Tyler and Brobeck Phleger & Harrison in New York, and he taught patent and startup law at Cardozo and University of Miami law schools for roughly fifteen years. His signature result: counsel for the prevailing ACLU/PUBPAT plaintiffs in Association for Molecular Pathology v. Myriad Genetics (569 U.S. 576, 2013), where the Supreme Court held naturally occurring human gene sequences are not patent eligible — he co-authored the certiorari and merits briefs for the petitioners (Duke Space records; Zeisler bio). He also represented organic farmers against Monsanto's GM-seed patents (Organic Seed Growers v. Monsanto) and served as lead counsel in the first U.S. GPL open-source license enforcement lawsuits (Software Freedom Conservancy records).

PTAB/IPR experience and credentials. Ravicher has verifiable PTAB experience as lead counsel for petitioner PDF Solutions in IPR2022-00671 and IPR2022-01196 against Ocean Semiconductor LLC, both semiconductor-related challenges terminated in 2022 by settlement (USPTO PTAB filings; Justia; Law360). His firm bio states he represents both patent holders and challengers in IPRs/PGRs involving biotech, pharma, software, and electronics. Admitted in New York (2001) and Florida (2013), before the Federal Circuit and U.S. Supreme Court, and registered with the USPTO (Reg. No. 47,015). Education: J.D., University of Virginia School of Law (2000); B.S., University of South Florida (1997) (Martindale; Zeisler bio — sources differ on the undergraduate major).

Sources: Zeisler PLLC attorney bio; Martindale.com; USPTO PTAB/IPR records; Justia dockets; Law360 firm profile; Software Freedom Conservancy records; Duke University Supreme Court brief archive.