What are the different types of subject matter combinations in patent classification?
According to MPEP 903.02(b), there are several types of subject matter combinations in patent classification: Basic Subject Matter Combined with Feature for Some Additional Purpose: The MPEP states, “The added purpose is in excess of the scope of the subject matter for the class, as defined in the class definition; e.g., adding a sifter to…
Read MoreHow does the USPC system handle perfecting features in patent classification?
The United States Patent Classification (USPC) system recognizes perfecting features as an important aspect of patent classification. According to MPEP 903.02(b), perfecting features are defined as follows: “Features may be added to the basic subject matter which do not change the character thereof, but do perfect it for its intended purpose; e.g., an overload release…
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