Patent Center, EFS-Web, and PAIR system requirements

Patent Center, EFS‐Web and Private PAIR

  • All modern browsers are supported such as Chrome, Firefox, Microsoft Edge, and Safari.



Please ensure that the following settings are applied to your computer and/or network.

NOTE: System administrative rights may be required.

  • Networks and Firewall infrastructures must allow outbound communication to USPTO via port 443/https.
  • Networks and Firewall infrastructures must not strip packet header contents.
  • Browsers/workstations must accept cookies, at least for the length of a particular communications session.