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Supreme Court Re-Invigorates 'Obviousness': KSR v. Teleflex Decision

By Benjamin Hershkowitz

On April 30, 2007, Justice Anthony Kennedy delivered a unanimous decision of the
U.S. Supreme Court in KSR International Co. v. Teleflex Inc., reversing the U.S. Court of Appeals for the Federal Circuit ('Federal Circuit') and, in effect, re-invigorating obviousness under 35 U.S.C. '103 as an available defense to a patent.

Under 35 U.S.C. '103 a patent is rendered obvious where:

the differences between the subject matter sought to be patented and the prior art are such that the subject matter as a whole would have been obvious at the time the invention was made to a person having ordinary skill in the art to which said subject matter pertains.

The Federal Circuit, interpreting '103 and prior U.S. Supreme Court guidance, propounded and has been applying the 'TSM test,' short for 'teaching, suggestion, or motivation.' According to the Federal Circuit, under the TSM test 'a patent claim is only proved obvious if 'some motivation or suggestion to combine the prior art teachings' can be found in the prior art, the nature of the problem, or the knowledge of a person having ordinary skill in the art.' Finding this test too 'rigid,' the U.S. Supreme Court reversed the Federal Circuit's finding of non-obviousness and advocated a more flexible approach.

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