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Kirk Sigmon Quoted by CEB on the Future of Fair Use

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Banner Witcoff’s Kirk Sigmon was recently quoted in California’s CEB (Continuing Education of the Bar) article, The Future of Fair Use: Will LLMs Have to Pay to Train on Copyrighted Works? This article shares insight on recent rulings from cases involving Anthropic and Meta AI. In the article, Kirk states that he views the rulings…

Vault Ranks Banner Witcoff as Top Intellectual Property Specialty Law Firm

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The 2026 Vault Rankings have named Banner Witcoff as No. 4 on their list of Best Intellectual Property Specialty Law Firms in the United States, and one of the top ten midsized law firms in Chicago. Additionally, the firm is recognized as a Top 150 Under 150 – a list of leading firms with 150…

Banner Witcoff and 16 Shareholders Earn Top Marks in Managing IP’s 2025 IP Stars

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Banner Witcoff is pleased to announce that Managing Intellectual Property (MIP) has ranked the firm and 16 shareholders in its 2025 edition of IP Stars, a guide to the world’s top intellectual property firms and practitioners. The guide once again “Highly Recommended” Banner Witcoff’s patent prosecution practice in Washington DC and Illinois, and also “Recommended”…

Banner Witcoff’s Patent Practice Receives Top Rankings in “IP Stars” 2025

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Managing IP ranks Banner Witcoff’s patent practice in its 2025 edition of “IP Stars,” a guide to the world’s top intellectual property firms. The guide “highly recommended” the firm’s patent prosecution practice in Washington DC and Illinois. The guide also “recommended” the firm’s patent dispute practice in both jurisdictions. Nationally, Banner Witcoff received a tier…

PTAB Highlights | Takeaways from Recent Decisions in Post-Issuance Proceedings

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By Scott Burow and Biswash Adhikari So, what’s happening at the PTAB? Attorney Scott Burow and summer associate Biswash Adhikari summarize recent decisions, including: Discretionary denial for unfair dealings, simultaneous proceedings, granted Director Review, and more! Unfair Dealings Can Lead to Petition Denial. Tessell, Inc. v. Nutanix, Inc., IPR2025-00322 (Paper 14) (June 12, 2025) (Coke…

IP Alert | Two Big AI/LLM Copyright Rulings: Fair Use OK, But Piracy/Output Still Matters

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By Victoria Webb and Kirk Sigmon This week, two significant copyright decisions relating to artificial intelligence (“AI”), machine learning training, and fair use were issued from the Northern District of California.  In the first case, Bartz et al. v. Anthropic PBC, No. 24-cv-05417, Doc. No. 231 (N.D. Cal. June 23, 2025) (“Anthropic”), the Court issued…
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