Home page of the United States Patent and Trademark Office's main web site.Search recorded assignment and record ownership changes.
Find existing patents, published patent applications, and other published patent documentation.United States Patent and Trademark Office - An Agency of the Department of Commerce. Search. Find it Fast Links.
U.S. Patent and Trademark Office. USAGov Logo. Espaol. Menu. Search.A-Z index of U.S. government departments and agencies. U.S. Patent and Trademark Office.
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The patent and trademark office provides freely searchable database; where a use can check whether a mark he/she is willing to register is already register by anyone else or not. For searching trademark in India; a user can use below URL.
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Search - DPMAregister - DEPATISnet - IPC Application Searching the International Patent Classification (IPC).
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The patent data available through Google Patent Search is from the U.S. Patent & Trademark Office (USPTO).
pat2pdf - A FREE patent search tool. UPDATE: As of , PAT2PDF now fetches and OCRs issued US Patents and Pre-Grant Publications from the USPTO's new system.
