What is a form fillable PDF?

A form-fillable PDF is any form that is downloadable from the USPTO website that allows the USPTO to load data directly into a USPTO database that is used to process forms so that the same information can appear in the Patent Application Information Retreival (PAIR) system. By extracting the data directly from the Form-Fillable PDFs, EFS-Web users can minimize rework and improve data accuracy.

See EFS Forms to access the form-fillable PDFs that are currently available to EFS-Web users.

USPTO FAQ - Questions and Answers (13AUG2007)