Claude for Legal Goes Live: A Taiwanese Patent Attorney's Hands-On Test

Just these past few days, on May 12, Anthropic rolled out Claude for Legal, turning Claude into a tool built specifically for legal professionals. While it was still fresh off the line, I immediately made time to give it a thorough once-over.

Quite a Lot Served Up at Once

This time they rolled out, in one go, 12 legal-domain plugins (Commercial, Corporate, IP, Litigation, and so on), integrations with more than 20 external tools (DocuSign, Westlaw, Box…), and all of it available to every paying user.

I looked into the IP Legal plugin in particular, but the upshot… really was just that—a “look”—because for an ordinary Taiwanese patent firm, its help is actually pretty limited.

The Whole Thing Is Built Around U.S. Law

What it can mainly do is trademark searches, cease-and-desist letters, open-source compliance, FTO, patent-annuity reminders, and the like—and the entire logic is built around U.S. law. As for the drafting, OA (office action) responses, appeal briefs, and claim amendments that those of us on the prosecution side do every single day, it doesn’t actually touch any of them.

What’s Truly Eye-Opening Is Its “Approach”

Although in the short term it can’t yet replace the tools I have in hand, its approach is very eye-opening: each plugin is really just a Skill written as a Markdown file—one that users can read for themselves and modify for themselves, with no coding whatsoever.

This actually carries an important message: write your own professional judgment into a format AI can understand, and then let it work according to your method.

That, perhaps, is the point most worth jotting down from this launch.