What are the drawing requirements for patent applications filed before December 18, 2013?

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Source: FAQ (MPEP-Based) BlueIron Update: 2024-09-09 5 Related FAQs This page is an FAQ based on guidance from the Manual of Patent Examining Procedure. It is provided as guidance, with links to the ground truth sources. This is information only: it is not legal advice. For patent applications filed before December 18, 2013, drawings were generally required to receive a filing date. As stated in the MPEP, For applications filed prior to December 18, 2013, 35 U.S.C. 111(a)(4) and 35 U.S.C. 111(b)(4) each provide, in part, that the ‘filing date… shall be the date on which… any required drawing are received in the Patent and Trademark Office.’ This means that if drawings were necessary for understanding the invention, they had to be included in the initial filing to secure a filing date. Other Related FAQs 5 FAQs Collapse What is an inventor&#8217;s certificate and how does it relate to patent priority rights? Can an inventor authorize someone else to sign the application oath or declaration on their behalf? What is the difference between an inventor and an applicant in a patent application? What are the signature requirements for inventor&#8217;s oaths or declarations? What are the requirements for inventor signatures on patent applications?