Henkels & McCoy, Inc. v. Elkin

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• Federal Cases - Graham v. John Deere Co.
• Federal Cases - Keystone Driller Co v. General Excavator Co Keystone Driller Co v. Osgood Co
• Federal Cases - United States v. Adams
• Federal Cases - Westinghouse Electric Corp. v. Hanovia Chem. & Mfg. Co.
• Federal Cases - Charles Hunnicutt Co. v. a B. Gaston Co.



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• Federal Cases - Waterman-Bic Pen Corp. v. WA SHEAFFER PEN CO., DIV. OF TEX.
• Federal Cases - Toro Manufacturing Corp. v. Jacobsen Manufacturing Co.
• Federal Cases - Pursche v. Atlas Scraper and Engineering Co.
• Federal Cases - Deering v. Winona Harvester Works
• US - Reference Stubs - Patents, plant variety protection, copyrights, mask works, designs, trademarks, and unfair competition
• US - Reference Stubs - Specification
• US - Reference Stubs - Conditions for patentability; non-obvious subject matter
• US - Reference Stubs - Presumption of validity; defenses