Patent Online Services

Patent Online Services is a central location where you can access resources that allow you to search, file, view and obtain status for patents. The following tools and web sites are available to aid you in your patent process.

Electronic Filing System (EFS-Web)

Apply for a patent using the Electronic Filing System (EFS-Web):


Patent Application Information Retrieval (PAIR) System

Check the status on and view associated documents for patent applications. Public PAIR provides limited access to patent application information and documents. Private PAIR provides secure, authorized access to patent application information and documents for registered customers.


Priority Document Exchange (PDX)

Program for direct electronic priority document exchange with participating foreign intellectual property offices (EPO, JPO, KIPO, and WIPO)

Visit PDX

Publication Site for Issued and Published Sequences (PSIPS)

Search for published patent sequences.


Electronic Patent Assignment System (EPAS)

To assign ownership of a patent.

Visit EPAS

Assignments on the Web for Patents (AOTW-P)

Search for patent assignments.

Visit AOTW-P

Official Gazette Online

View weekly published patents in the Official Gazette Online .

Patent Attorney/Agent Search

Search for registered patent attorneys or agents .