Obviousness under Section 103: A Comprehensive Guide to the Analysis

69 questions on obviousness under section 103, answered and cited by the UpLaw editorial team.

• Can nexus attach to a combination rather than a single feature?
• Can non-enablement of the prior art defeat an obviousness rejection?
• Did KSR weaken the analogous-art doctrine?
• Does disclosing an alternative embodiment count as teaching away?
• How does AI-assisted invention pressure the obviousness doctrine?
• How does a motivation attack work in a concrete mechanical case?
• How does a reasonable-expectation attack work in a pharmaceutical formulation case?
• How does long-felt need support nonobviousness?
• How does obviousness differ from novelty in policy terms?
• How does obviousness differ in kind from anticipation?
• How does obviousness work for design patents after LKQ?
• How does reasonable expectation of success differ from motivation?
• How does § 103 interact with § 101 eligibility?
• How does the predictability of the art change the analysis?
• How highly does the Federal Circuit rate objective indicia?
• How is KSR double-edged?
• How is obviousness used defensively in freedom-to-operate work?
• How probative are copying, praise, and licensing?
• How should a patent owner in an unpredictable art frame the argument?
• How should a practitioner choose between arguing and amending?
• How should a teaching-away argument be framed and presented?
• How should the substantive arguments be ordered?
• Is it error to treat secondary considerations as a tiebreaker?
• What are the four Graham inquiries?
• What are the limits on inherency in the obviousness context?
• What are the remaining steps of the § 103 diagnostic checklist?
• What are the seven USPTO obviousness rationales?
• What burden governs obviousness at the PTAB in an IPR?
• What can a 37 C.F.R. § 1.132 declaration establish?
• What caution cuts against overplaying a motivation attack?
• What counts as skepticism, and what does not?
• What did KSR preserve about the motivation requirement?
• What does 35 U.S.C. § 103 actually say?
• What does a four-track layered response look like in practice?
• What does commercial success prove, and what does it need?
• What does the "differences" factor require, and where do rejections come apart?
• What happened to the "flash of creative genius" test?
• What is obviousness-type double patenting?
• What is official notice, and how should it be traversed?
• What is step one of a response to a § 103 rejection?
• What is the candor trap inside every obviousness response?
• What is the change-in-principle-of-operation argument?
• What is the legal standard for teaching away?
• What is the loss-of-beneficial-properties argument?
• What is the nexus requirement?
• What is the obviousness posture before the examiner?
• What is the practitioner's diagnostic checklist for a § 103 rejection?
• What is the single most important thing to know about obviousness in prosecution?
• What makes a § 1.132 declaration effective?
• What makes prior art "analogous"?
• What must an accused infringer prove in district court?
• What portfolio lesson follows from the cross-forum burden differences?
• What sub-arguments live under a motivation attack?
• What three components must a prima facie obviousness rejection have?
• What two cautions cut against failure-of-others evidence?
• What two threshold questions cost nothing to ask?
• What was the teaching-suggestion-motivation test, and why did it harden?
• What were KSR's central holdings?
• When is nexus presumed?
• Who is the person of ordinary skill in the art?
• Why are unexpected results uniquely powerful?
• Why does obviousness analysis exist at all?
• Why does the Federal Circuit prize objective indicia?
• Why does the scope-and-content factor matter so much?
• Why is an examiner interview worth requesting?
• Why is a recited rationale not the same as a proved one?
• Why is hindsight the permanent structural problem in obviousness?
• Why is motivation to combine the most productive line of attack?
• Why is the skill-level definition a merits argument rather than a preliminary?