Donor software firm Mythos sues Anthropic over its Mythos model name

Global Printing, Inc., which sells a donor-relations software platform called Mythos to colleges, universities and nonprofits, sued Anthropic for trademark infringement in the US District Court for the Eastern District of Virginia on 13 November 2026. The complaint says the firm has used the MYTHOS name since October 2015 and holds US Trademark Registration No. 6,140,016 for software as a service, and that the US Patent and Trademark Office refused Anthropic’s two applications to register CLAUDE MYTHOS on 20 October 2026, citing that registration and a likelihood of confusion. It says both companies offer AI software services under the same mark and that customers have already been confused. The firm, which says it uses Claude in its own platform, asks for damages, trebled for intentional infringement, Anthropic’s profits from the name and a permanent injunction against Anthropic’s use of the mark.

When

13 Nov 2026

ID

WTA-N-2026-0894

Where

United States, Virginia

Who

Anthropic, Global Printing, Inc.

Topics

Courts and liability, Frontier models

Authority

US District Court for the Eastern District of Virginia (private lawsuit by Global Printing, Inc., dba Mythos)

Target

Anthropic

Action

trademark infringement suit under the Lanham Act over the MYTHOS mark; damages trebled, Anthropic’s profits and a permanent injunction; no amount stated (sought)

Status

filed on 13 Nov 2026; allegations not proven · Enforcement ledger

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