What types of filings may I submit using EFS-Web?

Registered and Unregistered eFilers may file new Accelerated Exam, Design, Design Reissue, International Application for filing in the US receiving office, Provisional, Reexam, Utility (Utility under 35 USC 111 (a)), Utility Reissue, U.S. National Stage applications under 35 USC 371, ASCII text files (sequence listing, computer listings, mega tables, mathematical formulae, chemical formulae, and 3D protein crystal structures), and Petition under 37 CFR 1.378(c).  Registered eFilers may also file follow-on documents and/or fees for previously filed applications, and Pre-grant publications.

USPTO FAQ - Questions and Answers (07JUL2007)