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This site will help user to search patent from USPTO. This totally free only patent search from USPTO database. All the credit goes to USPTO. Data may be few days older.

Patent Trial and Appeal Board (PTAB)

The Patent Trial and Appeal Board (PTAB) conducts trials, including inter partes, post-grant, and covered business method patent reviews and derivation proceedings, hears appeals from adverse examiner decisions in patent applications and reexamination proceedings, and renders decisions in interferences.

Patent Search

USPTO regularly updated and integrates the best available tools for inventor disambiguation and data quality control.So, this will allow user to search published patent from updated databse of USPTO.
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