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Enforcement or court caseFrontierUS DelawareConfirmed

Flinn AI Technologies sues Anthropic for patent infringement

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Source: US District Court for the District of Delaware (via CourtListener)Also reported by Complaint (CourtListener)

Flinn Artificial Intelligence (AI) Technologies, LLC filed a patent infringement complaint against Anthropic, PBC on 12 November 2026 in the US District Court for the District of Delaware (case 1:26-cv-01454). The complaint asserts five US patents on iterative attention-based neural-network training and processing, and names Claude Chat, Claude Code, Claude Cowork, Claude Design, Claude Enterprise and the Claude API as accused products. The plaintiff seeks damages of no less than a reasonable royalty, enhanced damages for wilful infringement, an ongoing royalty and a jury trial.

Why it matters

Anthropic faces a claim that its Claude products use patented attention-based architectures, and the plaintiff seeks damages and an ongoing royalty.

When
12 Nov 2026
ID
WTA-N-2026-0872
Where
United States, Delaware
Who
Flinn Artificial Intelligence (AI) Technologies, LLC, Anthropic
Authority
US District Court for the District of Delaware (private lawsuit)
Target
Anthropic
Action
patent infringement suit asserting five US patents on iterative attention-based neural networks against Claude products; a reasonable royalty, enhanced damages for wilful infringement and an ongoing royalty, no amount stated (sought)
Status
filed on 12 Nov 2026 (case 1:26-cv-01454); allegations not proven · Enforcement ledger

Summary written with AI by wheresthe.ai, from US District Court for the District of Delaware via CourtListener and the reporting credited above. Checked against the source on 12 Nov 2026.

Read the original at US District Court for the District of Delaware via CourtListener

Source copy: saved on 12 Nov 2026 to check this story and not republished, because the text belongs to its publisher. Document the source offers: document 1 (PDF). Also held by the Internet Archive.

Cite this story

WTA-N-2026-0872: “Flinn AI Technologies sues Anthropic for patent infringement.” wheresthe.ai, 12 Nov 2026. https://wheresthe.ai/d/us-flinn-ai-technologies-sues-anthropic-for-patent-infringement-2026-11/ (source: US District Court for the District of Delaware (via CourtListener)).

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