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Cuno Engineering Corp. v. Automatic Devices Corp., 314 U.S. 84, 62 S.Ct. 37, 86 L.Ed. 58, 51 U.S.P.Q. 272

Facts

This case involves a patent infringement action initiated by Automatic Devices Corporation against Cuno Engineering Corporation regarding claims 2, 3, and 11 of patent No. 1,736,544 for an automobile cigar lighter. The District Court ruled that these claims were not infringed, a decision that was later reversed by the Circuit Court of Appeals, which held the claims valid and infringed. The Supreme Court granted certiorari to determine the validity of the patent claims in light of prior art and the standards for patentability.

This is an action in equity brought by respondent for infringement, inter alia, upon claims 2, 3, and 11 of patent No. 1,736,544, granted November 19, 1929, on the application of H. E. Mead, filed August 24, 1927, for a cigar lighter.

Issue

Whether claims 2, 3, and 11 of the Mead patent are valid in light of the prior art and the requirements for patentability.

Whether claims 2, 3, and 11 of the Mead patent are valid in light of the prior art and the requirements for patentability.

Rule

To be patentable, an invention must not only be new and useful but must also involve an inventive step that exceeds the skill of a mechanic in the art. The mere combination of old devices or methods does not constitute an invention unless it reveals a flash of creative genius. The improvement must be more than a mere exercise of skill in the art.

To be patentable, an invention must not only be new and useful but must also involve an inventive step that exceeds the skill of a mechanic in the art. The mere combination of old devices or methods does not constitute an invention unless it reveals a flash of creative genius.

Analysis

The court analyzed the claims of the Mead patent against the backdrop of existing prior art, particularly focusing on the incorporation of a thermostatic control into a previously known lighter design. The court concluded that the combination of known elements did not rise to the level of invention as defined by patent law, as it merely represented the application of existing technology without the requisite inventive step.

The court analyzed the claims of the Mead patent against the backdrop of existing prior art, particularly focusing on the incorporation of a thermostatic control into a previously known lighter design. The court concluded that the combination of known elements did not rise to the level of invention as defined by patent law, as it merely represented the application of existing technology without the requisite inventive step.

Conclusion

The Supreme Court reversed the decision of the Circuit Court of Appeals, holding that the claims of the Mead patent were not valid due to a lack of patentable invention.

The Supreme Court reversed the decision of the Circuit Court of Appeals, holding that the claims of the Mead patent were not valid due to a lack of patentable invention.

Who won?

The Supreme Court ruled in favor of Cuno Engineering Corporation, reversing the lower court's decision that had found the patent claims valid. The Court reasoned that the combination of a thermostatic control with a cigar lighter did not constitute a patentable invention, as it merely utilized existing technology without demonstrating the necessary inventive step required for patentability.

The Supreme Court ruled in favor of Cuno Engineering Corporation, reversing the lower court's decision that had found the patent claims valid. The Court reasoned that the combination of a thermostatic control with a cigar lighter did not constitute a patentable invention, as it merely utilized existing technology without demonstrating the necessary inventive step required for patentability.

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