Patent Obviousness Under §103: What Inventors Should Know

The analytical framework

Graham v. John Deere identifies considerations including the scope and content of the prior art, differences between the art and the claims, and the level of ordinary skill. Objective considerations such as commercial success, long-felt need or failure of others can also be relevant.

In KSR v. Teleflex, the Supreme Court rejected a rigid application of the teaching-suggestion-motivation approach. The inquiry is flexible; predictable combinations of familiar elements may be obvious. That does not eliminate the need for supported reasoning.

Evaluate the actual record

Depending on the technology and proposed combination, issues may include a reason to combine, a reasonable expectation of success, teaching away, or whether the cited art actually supplies the claimed features. Each depends on evidence rather than labels.

Unexpected results and other objective evidence can matter, but a connection—or nexus—to the claimed invention is important. Technical evidence should be developed with attention to what the claims actually require.

Practical Implications

During drafting, document technical advantages, alternatives and results. During prosecution, review the examiner’s mapping of the claims and the proposed rationale.

Avoid arguing only that no reference shows the invention word for word. An obviousness response should address the combination and reasoning actually presented, while keeping useful claim scope in view.

Conclusion

Nonobviousness depends on the claims, prior art, reasoned analysis and relevant evidence—not difference alone. Document technical distinctions and address the actual rationale presented in the examination record.