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By anthropics
Run first-pass trademark clearance, patentability screening, and freedom-to-operate triage for IP legal practice. Draft cease-and-desist letters and DMCA takedowns, review IP clauses in agreements, check open source license compliance, and track portfolio renewal deadlines.
npx claudepluginhub anthropics/claude-for-legal --plugin ip-legalDraft a cease-and-desist letter (send mode) or triage one you received (receive mode). Use when asserting your rights against an infringer with a demand letter calibrated to your enforcement posture, or when an incoming C&D needs triage into a structured options memo with a recommendation.
Trademark clearance first pass — knockout + similar-marks check producing a flag list, not a clearance opinion. Use when a new mark is proposed, when asked whether a mark is available or to run a knockout search, or when assessing likelihood-of-confusion factors before a full professional search. This skill never concludes a mark is clear.
Run the cold-start interview to learn your IP practice and write your practice profile. Use on first install when the practice profile is missing or still contains placeholders, when re-onboarding with --redo, or when re-probing integrations with --check-integrations after connecting or disconnecting an MCP. This is the ONLY skill that should run on a fresh install.
Guided customization of your IP practice profile — change one thing without re-running the whole cold-start interview. Adjust risk posture, escalation contacts, portfolio scope, brand protection strategy, enforcement posture, clearance thresholds, OSS review rules, or matter workspace paths. Use when the user says "change my [thing]", "update my profile", "edit my config", or "customize".
Freedom-to-operate triage — a structured first look at potentially blocking patents, not an FTO opinion. Use when a product, process, or feature is being evaluated for blocking patents, when asked whether anything stops a launch, or to build a claim-chart first pass against the most plausible patents before patent counsel review. This skill never concludes a product is clear to launch.
Patent workflows — search patent and non-patent literature, legal texts, SEP technical standards, prior art, claim analysis.
Free Law Project's legal research platform — millions of U.S. court opinions, PACER dockets, judge profiles, oral arguments, and citation verification.
Primary law research — search cases by concept or wording, find cases from citations, extract authorities, check treatment, verify quoted language.
Lexis+ legal research — case law, statutes, and Shepard's — with Protegé.
Search messages, read channels, find discussions across your workspace.
External network access
Connects to servers outside your machine
Uses power tools
Uses Bash, Write, or Edit tools
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Runs first-pass trademark clearance and freedom-to-operate triage, screens invention disclosures for initial patentability, drafts and triages cease-and-desist letters and DMCA takedowns (send and respond), checks open source compliance, reviews IP clauses, and tracks registrations and renewal deadlines.
Manages the litigation portfolio — matters, deadlines, holds, demands, outside counsel — and does the work: claim charts (patent and civil), chronologies, depo prep, privilege logs, brief drafting. Adapts to how you work litigation: in-house, firm, or solo.
Speed up contract review, NDA triage, and compliance workflows for in-house legal teams. Draft legal briefs, organize precedent research, and manage institutional knowledge.
Professional patent workflow prompts for claims drafting, prosecution, prior art analysis, claim charting, continuation strategy, and portfolio management. Built by a patent attorney for real-world patent work.
AI-powered contract review, risk analysis, document generation, and compliance auditing with 12 skills and 5 parallel agents
Legal Operations and Compliance: 1 agent, 6 skills (1 router + 5 products), 6 jurisdiction overlays (UK, EU, US, Pakistan, UAE, GCC). Extends Anthropic's built-in Legal Plugin with multi-jurisdiction awareness and domain-specific workflows.
Migrate your code and prompts from Sonnet 4.x and Opus 4.1 to Opus 4.5.
Briefing pack before every client meeting
Earnings call and filings to model update to note draft
Comps, precedents, LBO to a branded pitch deck, end to end
Private equity deal sourcing and workflow tools: company discovery, CRM integration, and founder outreach
Reference agents, skills, and data connectors for the legal workflows we see most — in-house commercial, privacy, product, corporate, employment, litigation, regulatory, AI governance, IP, and the learning side of the practice (law school clinics and students).
New here? Start with QUICKSTART.md — install in 60 seconds. This README is the full reference.
Everything here is available two ways from one source: install it as a Claude Cowork or Claude Code plugin, or deploy it through the Claude Managed Agents API behind your own workflow engine. Same system prompt, same skills — you choose where it runs.
https://github.com/user-attachments/assets/51394f0a-5277-4fe2-b81c-5c5e9ac876b5
[!IMPORTANT] Every output from these plugins is a draft for attorney review — not legal advice, not a legal conclusion, not a substitute for a lawyer. They are built with guardrails that reflect that: source attribution on every citation, conservative defaults on privilege and subjective legal calls, jurisdiction assumptions surfaced, and explicit gates before anything is filed, sent, or relied on. A lawyer reviews, verifies, and takes professional responsibility for anything that leaves the building. These plugins make that review faster; they do not replace it.
These plugins do not represent Anthropic's legal positions. They are tools that help lawyers analyze issues. Where a skill includes a checklist item, a suggested framework, a risk flag, or a characterization of case law or regulatory guidance, that is an aid to the reviewing attorney's own analysis, not a statement of Anthropic's view of the law. The law in many of these areas is unsettled and evolving. The attorney using the plugin — not the plugin, and not Anthropic — is responsible for the legal positions taken in their work product.
What's in the repo:
CLAUDE.md practice profile that every skill reads from.Each agent is named for the workflow it runs. They're the most common surface — start with the ones that match your work, then tune the underlying skill, the practice profile, and the connectors to how your team does it.