Legal Opinion
Warner-Jenkinson Co. v. Hilton Davis Chemical Co.
Supreme Court of the United States
Decided March 3, 1997No. 95-728PublishedCited by 1,406 opinions
1Opinion of the CourtJustice Thomas
• Nearly 50 years ago, this Court in Graver Tank & Mfg. Co. v. Linde Air Products Co., 339 U. S. 605 (1950), set out the modern contours of what is known in patent law as the “doctrine of equivalents.” Under this doctrine, a product or process that does not literally infringe upon the express terms of a patent claim may nonetheless be found to infringe if there is “equivalence” between the elements of the accused product or process and the claimed elements of the patented invention. Id., at 609. Petitioner, which was found to have infringed upon respondent’s patent under the doctrine of…
2Cases cited18 opinions
- Celotex Corp. v. Catrett, Administratrix of the Estate of CatrettSupreme Court of the United States · 1986
- Graham v. John Deere Co. of Kansas CitySupreme Court of the United States · 1966
- MARKMAN Et Al. v. WESTVIEW INSTRUMENTS, INC., Et Al.Supreme Court of the United States · 1996
- Graver Tank & Mfg. Co. v. Linde Air Products Co.Supreme Court of the United States · 1950
- MacHine Co. v. MurphySupreme Court of the United States · 1878
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3Cited by1,406 opinions
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- Comark Communications, Inc. v. Harris CorporationCourt of Appeals for the Federal Circuit · 1998
- 02 Micro International Ltd. v. Beyond Innovation Technology Co.Court of Appeals for the Federal Circuit · 2008
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