Ashland Oil, Inc. v. Delta Resins & Refractories, Inc.

How courts have described this case

Verbatim parenthetical descriptions written by other courts when citing this decision. Ranked by citation-network relevance.

• stating that the knowledge of one skilled in the art may provide the “teaching, suggestion, or inference” to combine references
• “Secon- dary considerations may be the most pertinent, probabitve, and revealing evidence available to the decision maker in reaching a conclusion on the obviousness/nonobviousness issue.”
• “Secondary considera- tions may be the most pertinent, probative, and revealing evidence available to the decision maker in reaching a conclusion on the obviousness/nonobviousness issue.”
• “Lack of factual support for expert opinion going to factual determinations, however, may render the testimony of little probative value in a validity determination.”
• “Where the party asserting invalidity must rely upon a combination of prior art references to establish invalidity, that party bears the burden of showing some teaching or suggestion in those references which supported their use in combination.”

Source: CourtListener parenthetical corpus (CC0).