How does the USPTO define ‘composition of matter’ for patent eligibility?

How does the USPTO define ‘composition of matter’ for patent eligibility? The USPTO defines ‘composition of matter’ as one of the four categories of patent-eligible subject matter under 35 U.S.C. § 101. According to the MPEP 2106.03: “Compositions of matter” are chemical compounds, mechanical mixtures, gases, and other materials. This category encompasses: Chemical compounds (e.g.,…

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