Supreme Court of the United States
Sinclair & Carroll Co., Inc. v. Interchemical Corporation
May 21, 1945325 U.S. 327
Summary
The Supreme Court reversed the circuit court, holding that the patent on a heat‑drying printing ink was invalid because the invention consisted merely of selecting a known solvent from a catalog, which does not satisfy the statutory requirement of invention.
Holding
- Whether the patent on the heat‑drying printing ink satisfies the requirement of invention (non‑obviousness) under patent law.. The patent is invalid because the selection of a known solvent from a catalog to meet known requirements does not constitute invention.
Docket 656
Cited authorities
- U.S. Patent No. 2,087,190
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