What are the recommended methods for filing new patent applications with the USPTO?

The USPTO strongly recommends the following methods for filing new patent applications:

1. Electronic Filing System (EFS-Web or Patent Center): This is the preferred method whenever permitted.
2. Priority Mail Express®: If not filing electronically, use this method in accordance with 37 CFR 1.10 to secure the date of deposit as the filing date.
3. Hand-delivery to the USPTO office.

Avoid filing by first-class mail, as it only secures the date of receipt at the USPTO as the filing date, risking delays in delivery.

As stated in MPEP 511: “The Office strongly recommends that applicants file new applications by Priority Mail Express® in accordance with 37 CFR 1.10 (if such applications are not filed via EFS-Web) because such correspondence will be accorded the date of deposit in Priority Mail Express® with the USPS as the filing date.”

Additionally, “In general, applicants should consider filing new patent applications (as well as patent-related correspondence) via the USPTO patent electronic filing system (EFS-Web or Patent Center) whenever permitted.”