Legal Opinion
Dart Industries, Inc. v. E. I. Du Pont De Nemours and Company
Court of Appeals for the Seventh Circuit
Decided September 21, 1973No. 72-1958PublishedCited by 33 opinions
1Opinion of the Court
STEVENS, Circuit Judge.
More than one year prior to December 24, 1952, the date he applied for a patent on a glass reinforced thermoplastic molding compound, the inventor sold small quantities to four different purchasers. When the sales were consummated, the invention had already been reduced to practice but the product had not yet been tested in an injection molding machine; each of the four customers indicated that its purchase was for experimental purposes. At the time of the four sales, an essential ingredient— glass roving — was in short supply; for that reason, the inventor was not in a…
2Cases cited16 opinions
- Elizabeth v. Pavement Co.Supreme Court of the United States · 1878
- Egbert v. LippmannSupreme Court of the United States · 1881
- Smith & Griggs Manufacturing Co. v. SpragueSupreme Court of the United States · 1887
- Anthony J. Cali v. Eastern Airlines, Inc.Court of Appeals for the Second Circuit · 1971
- Amphenol Corporation, a Corporation of Delaware v. General Time Corporation, a Corporation of DelawareCourt of Appeals for the Seventh Circuit · 1968
11 more not listed; retrieve them via the Exa API.
3Cited by33 opinions
- Pfaff v. Wells Electronics, Inc.Supreme Court of the United States · 1998
- Umc Electronics Company v. The United States, Cross-AppellantCourt of Appeals for the Federal Circuit · 1987
- Handgards, Inc., a Corporation v. Ethicon, Inc., a CorporationCourt of Appeals for the Ninth Circuit · 1984
- Timely Products Corporation, Raphael J. Costanzo v. Stanley ArronCourt of Appeals for the Second Circuit · 1975
- In Re Yarn Processing Patent Validity Litigation. Sauquoit Fibers Company v. Leesona Corporation, Kayser-Roth Corporation (In Its Own Name and D/B/A Kayser-Roth Hosiery Companyand Kayser-Roth Hosiery Co., Inc.) v. Leesona Corporation, Leesona Corporation v. The Duplan CorporationCourt of Appeals for the Fifth Circuit · 1974
28 more not listed; retrieve them via the Exa API.