What are the filing date requirements for patent applications filed on or after December 18, 2013?

For nonprovisional applications (except design applications) filed on or after December 18, 2013, the filing date is the date on which a specification, with or without claims, is received in the Office. This change was implemented as a result of the Patent Law Treaties Implementation Act of 2012 (PLTIA). The MPEP states: Except for design…

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Are drawings required for a patent application to receive a filing date under the new rules?

For applications filed on or after December 18, 2013, drawings are not required to receive a filing date, except for design patent applications. However, it’s important to note that drawings may still be necessary for understanding the invention. The MPEP clarifies: Also, for applications filed on or after December 18, 2013, an application (other than…

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