Useful Links

Top 100 inventors of U.S. patents

Top 100 assignees of U.S. patents 

Patents.comwright2

Patentlens.com

Freepatentsonline

United States Patent Classes

Search the U. S. Patent & Trademark Office 

Search WO patents at Patentscope

Search European patents at Espacenet

Search the Canadian Patent Office

About U.S. Provisional Patent Applications

The PCT Applicant’s Guide by WIPO

Patent Law Blog – Patently-O

European Patent Law Blog


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