ClaimMaster review
A Windows Word add-in for patent drafting, proofreading, and prosecution tasks.
Reviewed by iTechGuides Editors · Editorial team · Updated Nov 2026
ClaimMaster is a Windows add-in for Microsoft Word that brings patent proofreading, drafting, and prosecution automation into a practitioner’s document workflow. Patent attorneys, agents, paralegals, and other patent practitioners can use it to check claims and specifications for issues such as missing antecedent basis, inconsistent part numbers, and unsupported language. It also includes patent-data downloading, family visualization, Office Action analysis, response shells, and form generation, making it a broad drafting-oriented toolkit rather than a standalone search service.
Its Word-centered approach is the main fit consideration. ClaimMaster integrates with Microsoft Word, OpenAI GPT, USPTO Patent Center and PEDS, EPO Espacenet, and Google Patents. Drafting tools can generate application sections and figures from claims, while GenAI features support drafting and editing. Practitioners can also clone method claims into other statutory claim types, visualize patent-family dependencies, and generate USPTO and IDS forms using bibliographic data. The software runs locally on Windows, so it suits teams whose work already centers on Word and who prefer desktop operation; it is not a cloud proofreading service.
According to the vendor’s pricing page, Lite costs $24 per user monthly or $20 per user monthly with annual billing, covering patent prosecution and analysis task automation. Lite+Shells costs $36 monthly or $30 with annual billing and adds Office Action shells, USPTO forms, and OCR. QA is also $36 monthly or $30 annually, focused on proofreading and quality assurance. Pro costs $42 monthly or $35 annually and includes proofreading, claim automation, patent analysis, and downloading tools. A 30-day trial is available without a credit card. ClaimMaster is a sensible choice for practitioners seeking document-level drafting and checking tools in Word; those needing a non-Windows or cloud-based proofreading workflow should look elsewhere.
Questions about ClaimMaster
Does ClaimMaster have a free plan? No free plan is listed; paid plans start at $24/user/mo (Lite).
How much does ClaimMaster cost? ClaimMaster lists 6 paid plans; the lowest is Lite at $24/user/mo.
Is there a free trial of ClaimMaster? Yes: a 30-day free trial; no card is needed.
What does ClaimMaster run on? Windows. It runs as a desktop app.
What does ClaimMaster integrate with? 6 integrations, including Microsoft Word, OpenAI GPT, USPTO Patent Center, USPTO PEDS and EPO Espacenet.
Who is ClaimMaster built for? Solo users, small businesses, mid-market companies and enterprises (our editorial estimate).
ClaimMaster pros and cons
- Where it wins
- Checks claims and specifications for support, numbering, and consistency issues
- Generates application sections, figures, Office Action shells, and USPTO forms
- Connects Word workflows with USPTO, EPO, Google Patents, and GPT tools
- Where it doesn't
- Runs on Windows as a desktop add-in, not as a cloud proofreading service
- Plan features are split across Lite, Lite+Shells, QA, and Pro
- The $20 per-user monthly starting rate requires annual billing
ClaimMaster fact sheet, pricing and score →
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