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Novelty and Obviousness Are Different Tests

Written from 35 U.S.C. 102 and 35 U.S.C. 103. Both are statutes. Current as of 22 August 2026.

What it says

Section 102 asks whether one reference already contains the invention. Section 103 asks whether the gap between the prior art and the claim was one an ordinarily skilled person would have closed. They are distinct analyses, and clearing the first does not touch the second.

These get treated as one idea in most explanations, and they are not one idea. They are two statutes asking different questions, and an invention can pass the first and fail the second.

Section 102 is about identity. Was this already available to the public before your effective filing date? A patent, a printed publication, a public use, a sale, or anything else available to the public counts.

Section 103 is about distance. Its text begins notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, which is what makes it a separate question rather than a stricter version of the same one. It reaches a claim that section 102 does not defeat identically.

The practical consequence is that "nobody has done exactly this" answers one question and leaves the other untouched. Similarity across two references is not anticipation at all. It is a different rejection under a different statute, decided a different way.

Both use the same measuring point. Obviousness is judged before the effective filing date, which is the date section 102 uses throughout.

One practical note, since the framing above can suggest a fixed order. These are two analyses rather than two steps. An examiner may assert anticipation and obviousness in the alternative, or apply them to different claims, and an obviousness theory can stand where an anticipation theory fails.

What This Does Not Decide

Neither section is a test you can run on yourself. This page separates two questions that often get merged. Separating them is not the same as answering either, and both answers depend on a record of prior art that a page cannot see.
  • It does not say whether anything is novel or non-obvious.
  • It does not cover the one-year grace period, the exceptions in section 102(b), or what counts as available to the public. Those sit in the prior-art pages.
  • It does not address eligibility, enablement or written description, which are separate requirements a claim must also meet.

Educational, not legal advice. Whether any of this reaches a particular invention is a determination for a registered patent practitioner working from the actual prior art.

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