Can a Markush group include combinations or mixtures of alternatives?
Yes, a Markush group can include combinations or mixtures of alternatives, but it requires specific language to make this clear. The MPEP 2173.05(h) provides guidance on this: “If a claim is intended to encompass combinations or mixtures of the alternatives set forth in the Markush grouping, the claim may include qualifying language preceding the recited…
Read MoreWhat are the different combinations and subcombinations considered in USPC classification?
The USPC classification system considers various combinations and subcombinations for each type of subject matter. These include: Basic Subject Matter Combined with Feature for Some Additional Purpose: This refers to features added to the basic subject matter that expand its scope beyond the class definition. Basic Subject Matter Combined with Perfecting Feature: These are features…
Read MoreWhat is the scope of a class in the United States Patent Classification (USPC) system?
The scope of a class in the USPC system encompasses various types of subject matter and their combinations. According to MPEP 903.02(b), the main types of subject matter include: Manufacture Art Apparatus Stock material The MPEP states: “In using any classification system, it is necessary to analyze the organization of the class or classes to…
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