How does the USPTO treat ‘instruction limitations’ in method claims?

Source: FAQ (MPEP-Based)BlueIron Update: 2024-09-29

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.

The USPTO extends the rationale from printed matter cases to method claims that include ‘instruction limitations’. According to MPEP 2112.01(III):

“The court has extended the rationale in the printed matter cases, in which, for example, written instructions are added to a known product, to method claims in which ‘an instruction limitation’ (i.e., a limitation ‘informing’ someone about the existence of an inherent property of that method) is added to a method known in the art.” King Pharmaceuticals, Inc. v. Eon Labs, Inc., 616 F.3d 1267, 1279, 95 USPQ2d 1833, 1842 (2010).

The key inquiry for such method cases is whether a new and nonobvious functional relationship exists with the known method. If the ‘instruction limitation’ merely informs a user about an inherent property of the method without establishing a new and unobvious functional relationship, it will not be given patentable weight.

Topics: And Apparatus Claims MPEP 2100 - Patentability MPEP 2112.01 - Composition Patent Law Patent Procedure Product
Tags: Contested Case Jurisdiction, Establishing Prima Facie, federal circuit appeal, Inherent Feature