What are subcombinations in the context of patent classification?

In patent classification, subcombinations refer to components or features that can be part of a larger invention or have utility on their own. MPEP 903.02(b) describes two types of subcombinations:

1. Subcombinations Specialized to Basic Subject Matter: The MPEP states, “Each type of basic subject matter may have subcombinations specialized to use therewith; e.g., the crushing element of a stonecrusher.” These are components specifically designed for use with a particular type of invention.
2. Subcombinations of General Utility: As explained in the MPEP, “Each type of basic subject matter may have subcombinations which have utility with other and different types of subject matter; e.g., the machine elements of a stonecrusher.” These are more versatile components that can be used in various types of inventions.

The MPEP further notes: “Subcombinations of this character usually are provided for in some general class so that the examiner should determine in each instance where they are classified.” This highlights the importance of proper classification for subcombinations, especially those of general utility.

To learn more:

• Subcombinations
• Patent Classification
• Specialized Subcombinations
• General Utility Subcombinations