What are the filing date requirements for nonprovisional applications under the Patent Law Treaties Implementation Act?

The Patent Law Treaties Implementation Act of 2012 (PLTIA) amended the filing date requirements for nonprovisional applications filed under 35 U.S.C. 111(a) on or after December 18, 2013. The key changes are:

• Nonprovisional applications (except for design patent applications) no longer require at least one claim or any drawings to receive a filing date.
• For design patent applications, the filing date is the date on which the USPTO receives the specification including at least one claim and any required drawings.
• As provided in 35 U.S.C. 111(c), a nonprovisional application may be filed by reference to a previously filed application (foreign, international, provisional, or nonprovisional).

These changes simplified the filing process for most nonprovisional applications while maintaining specific requirements for design patent applications.