ClaimMaster
ClaimMaster: A Windows Word add-in for patent drafting, proofreading, and prosecution tasks. Ranked #3 of 11 in Patents Drafting And Analysis Software by our editors (7.9/10); pricing: 30-day trial; best for patent practitioners focused on drafting workflows.
At a glance
- Editor score7.9 / 10
- Pricing30-day trial
- Best forPatent practitioners focused on drafting workflows
- Free planNo
- Paid from$20/user/mo
- Patent draftingYes
- Facts checked24 Sep 2026
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
Our verdict on ClaimMaster
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).
Your product? Our editors can test ClaimMaster in depth and publish a review, labelled as paid · from $149/mo →
ClaimMaster pricing
All 6 ClaimMaster plans and prices →
ClaimMaster fact sheet
| Free plan | No |
|---|---|
| Paid from | $20/user/mo |
| Patent drafting | Yes |
| Patent search | Yes |
| Patent analytics | Yes |
| Claim analysis | Yes |
| Jurisdictions covered | Not verified |
| Document export | |
| Free trial | 30 days · no card needed |
| Deployment | Desktop |
| Platforms | Windows |
| Support | Email, Phone, Docs |
| Built for | Solo, Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 6 integrations: Microsoft Word, OpenAI GPT, USPTO Patent Center, USPTO PEDS, EPO Espacenet, Google Patents |
| Pricing | 30-day trial (source) |
| Website | patentclaimmaster.com |
| Facts checked | 24 Sep 2026 |
ClaimMaster integrations
ClaimMaster lists 6 integrations on its own site.
- Microsoft Word
- OpenAI GPT
- USPTO Patent Center
- USPTO PEDS
- EPO Espacenet
- Google Patents
Alternatives to ClaimMaster
- PatSnapBroad patent search and analysis with evidence-linked workflows and flexible deployment.8.6
- Derwent InnovationA broad patent and literature search tool, not a patent-application drafting workflow.7.9
- DeepIPA patent workflow assistant spanning application drafts, prosecution, prior art, and FTO.7.8
See all ClaimMaster alternatives →
ClaimMaster vs the competition
- ClaimMaster vs PatSnap
- ClaimMaster vs Derwent Innovation
- ClaimMaster vs DeepIP
- ClaimMaster vs PowerPatent
- ClaimMaster vs IPRally
- ClaimMaster vs Minesoft PatBase
Compare ClaimMaster with any tool side by side →
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Reviewed by iTechGuides Editors · Editorial team · Updated Nov 2026
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