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Uspto - United States Patent and Trademark Office

patft.uspto.gov/

The US Patent and Trademark Office (PTO) offers World-Wide Web (Web) access to bibliographic and full-text patent databases.

Google Patents

www.google.com/patents

Search more than seven million U.S. patents.

Google Patents

patents.google.com/

Search and read the full text of patents from around the world with Google Patents, and find prior art in our index of non-patent literature.

WIPO - Search International and National Patent Collections

patentscope.wipo.int/

This patent search tool allows you not only to search the PCT database of about 2 million International Applications but also the worldwide patent collections.

FPO IP Research & Communities

www.freepatentsonline.com/

Complete Patent Searching Database and Patent Data Analytics Services.

EPO - Searching for patents

www.epo.org/searching-for-patents.html

Technical information. We provide access to the largest single source of technical information in the world: our databases containing millions of patent ...

EPO - Espacenet patent search

www.epo.org/searching-for-patents/technical/espacenet.html

Accessible to beginners and experts, Espacenet contains data on more than 90 million patent documents from around the world. Supporting information can ...

Search - Free Patents Online

www.freepatentsonline.com/search.html

Complete Patent Searching Database and Patent Data Analytics Services. ... Expert Search; Quick Search. Click here for syntax ... US Patent Applications

Espacenet - Home page

worldwide.espacenet.com/

It gives you an insight into how examiners in national patent offices look for prior art, and can help you get early certainty from their search reports on pending ...

Patent Search - CPA Global

www.cpaglobal.com/patent-search/

A winning search has to hit several marks. It has to be customised to meet your exact legal and technical requirements. It has to be delivered within your desired  ...

More Info

Search for Patents | USPTO

www.uspto.gov

Jul 4, 2009 ... See this important information about searching for patents: ... Inventors are encouraged to search the USPTO's patent database to see if a ...

Advanced Patent Search - Google

www.google.com

Advanced Patent Search, About Google ... Patent number, Return patents with the patent number. Title, Return patents with the patent title. Inventor, Return ...

Patent Searching 101: A Patent Search Tutorial - IPWatchdog.com ...

www.ipwatchdog.com

Jul 11, 2015 ... It is quite common for inventors to do a patent search and find nothing even when there are things that could and would be found by a ...