Abnormal Security Responds Publicly to Anthropic Trademark Lawsuit

Summary

Abnormal Security CEO published a public statement on July 9th responding to a lawsuit filed by Anthropic on July 1st, accusing Abnormal of trademark infringement and unfair competition over their slash-based logo. Abnormal denies all claims, arguing that the company was founded in 2018—three years before Anthropic—and that its logo was designed in April 2021, just months after Anthropic's founding and before Claude existed. The CEO emphasized that Abnormal operates in the cybersecurity market with specialized behavioral AI for threat detection and response, a fundamentally different product category from Anthropic's general-purpose language models.

Notably, Abnormal said Anthropic never informed them of the lawsuit despite being a large customer; the CEO learned about it from a reporter. The lawsuit reportedly seeks "disgorgement of all revenues, earnings, profits, compensation, and benefits" from Abnormal, which the CEO called "shocking" and inconsistent with Anthropic's stated mission. Abnormal clarified that it does not rely on Claude or any Anthropic technology for its core threat detection systems, using Claude only as a productivity tool internally, and stressed that no customer has ever been confused about the two companies' identities.

• Anthropic has no registered trademark covering cybersecurity products, according to public trademark records
• Abnormal does not rely on Claude for customer protection; Claude is used only as an internal productivity tool
• Anthropic did not notify Abnormal of the lawsuit despite their customer relationship; the CEO learned of it from a reporter
• The lawsuit's demand for disgorgement of all revenues is characterized as inconsistent with Anthropic's stated mission to act for the global good