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Search over 20 million patents from India, the United States, and Europe in one place. Use keyword search, AI-powered semantic search, or upload a PDF to find relevant prior art instantly.
Search 1,000,000+ patents from the Indian Patent Office with full-text access, application status tracking, and AI-powered semantic search.
Access 15+ million US patents from the USPTO Open Data Portal with full-text search, CPC classification filters, and complete patent specifications.
Search 2.2+ million European patents covering 38+ member states through the European Patent Office's OPS API with IPC classification support.
Techniques used by patent attorneys, IP professionals, and R&D teams.
Enter technical terms from the title, abstract, or claims. Use specific technical vocabulary rather than generic terms. For example, "electrochromic polymer film" is more precise than "smart glass".
Enable the AI toggle to find patents by meaning, not just exact words. Describe your invention in plain language — the AI finds patents with similar technical concepts even if they use different terminology.
Upload a patent application draft, technical disclosure, or research paper. Our AI extracts the key inventive concepts and finds relevant prior art automatically — ideal for patentability searches.
Narrow results by filing date, publication date, applicant name, field of invention, IPC/CPC classification code, application status, and application type. Combine filters to pinpoint the most relevant patents.
Use the applicant filter to find all patents filed by a specific company or research institution. Useful for competitor patent portfolio analysis, technology scouting, and due diligence.
Search by IPC (International Patent Classification) or CPC (Cooperative Patent Classification) codes to explore all patents in a technology domain. Effective for comprehensive landscape studies and white-space analysis.
From startups to Fortune 500 R&D teams — patent search is essential at every stage of innovation.
Before filing a patent application, search for existing patents and publications that disclose similar inventions. Prior art that predates your invention can prevent you from obtaining a patent or limit claim scope. A comprehensive patentability search across multiple jurisdictions is strongly recommended.
Determine whether your product, process, or technology can be commercialized in a specific country without infringing active patents. Search for in-force patents with claims that could cover your implementation before launching a product or entering a new market.
Map out the patent landscape in a technology area to understand who the key players are, where the white spaces are, and how the field is evolving. Use classification-code search and applicant filtering to build a comprehensive picture of innovation activity across India, the US, and Europe.
Track patent filings by competitors to anticipate their technology direction, identify potential IP threats, and find licensing opportunities. Use the applicant filter with date ranges to see recent filings by companies in your industry across Indian, US, and European patent offices.
Common questions about patent search, databases, and how PatentAssist.ai works.
A patent search is the process of examining patent databases to find existing patents or applications related to a specific technology or invention. Patent searches are used for prior art research before filing, freedom-to-operate analysis, technology landscaping, and identifying potential infringement risks.
PatentAssist.ai provides free access to 20+ million patents from three major offices: IP India (1,000,000+ Indian patents), USPTO (15+ million US patents), and EPO (2.2+ million European patents). Search by keyword, applicant name, inventor name, IPC/CPC classification, or upload a PDF to find similar patents using AI — all at no cost.
IPO / IP India (Indian Patent Office) grants patents enforceable in India. USPTO (United States Patent and Trademark Office) grants US patents enforceable in the United States. EPO (European Patent Office) processes applications on behalf of 38+ member states — a granted European patent can be validated in multiple European countries. Each jurisdiction has separate patent rights; a patent granted in India does not protect the invention in the US or Europe.
AI patent search uses vector embeddings to understand the semantic meaning of your query — not just exact keyword matches. You can describe your invention in plain language, and the AI finds patents with similar technical concepts even if they use different terminology. The PDF upload feature extracts key inventive features automatically and performs a semantic search across the database on your behalf.
Prior art search (also called a patentability search or novelty search) means searching patent databases and scientific literature for existing disclosures that pre-date your invention. If relevant prior art is found, it can affect the novelty and inventive step required for patentability. Conducting a prior art search across Indian, US, and European patents before filing is strongly recommended.
Yes. PatentAssist.ai supports IPC (International Patent
Classification) filtering for Indian and European
patents, and CPC (Cooperative Patent Classification) for
USPTO patents. Classification-based search is useful for
comprehensive technology landscape analysis. Enter the
classification code (e.g., A61K for pharmaceutical preparations) in the classification filter
to find all patents in that technical domain.
Use the Applicants filter in the search panel to filter patents by company or individual applicant name. For Indian patents, you can also include the applicant name directly in the search query. For USPTO patents, use the applicant/assignee filter in the advanced filters section. This is useful for building a competitor patent portfolio view or conducting due diligence on IP ownership.
Freedom to operate (FTO) analysis determines whether you can make, use, or sell a product in a territory without infringing active third-party patents. It involves searching for in-force patents whose claims could potentially cover your implementation. PatentAssist.ai's status tracking and full-text claims access make it easier to assess claim scope and patent validity during an FTO review.
After completing your prior art search, use our AI-powered patent drafting tool to generate a complete provisional or complete patent specification — tailored to Indian, US, or international filing formats.
Try AI Patent Drafting