Legal Opinion
Preston G. Gaddis v. Calgon Corporation
Court of Appeals for the Fifth Circuit
Decided January 15, 1975No. 73-3663PublishedCited by 27 opinions
1Opinion of the Court
AINSWORTH, Circuit Judge:
Plaintiff, Preston G. Gaddis, brought this suit for the infringement by Calgon Corporation of United States Patent No. 3,425,669 [Patent ’669] issued to plaintiff on February 4, 1969, for a “Dry Chemical Feeder Method and Apparatus.” Defendant answered and generally denied plaintiff’s allegations; it stated that the patent in suit was invalid and void, and further that its practices did not infringe any valid claims of the patent. Defendant also counterclaimed for damages under the antitrust laws of the United States, 15 U.S.C. §§ 1, 2 and 3, and averred that…
2Cases cited20 opinions
- Graham v. John Deere Co. of Kansas CitySupreme Court of the United States · 1966
- 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
- Sanitary Refrigerator Co. v. WintersSupreme Court of the United States · 1929
- Radio Corp. of America v. Radio Engineering Laboratories, Inc.Supreme Court of the United States · 1934
15 more not listed; retrieve them via the Exa API.
3Cited by27 opinions
- Studiengesellschaft Kohle Mbh, as Trustee for the Max-Planck-Institut Fur Kohlenforschung v. Eastman Kodak CompanyCourt of Appeals for the Fifth Circuit · 1980
- Louis W. Parker, Plaintiff-Appellee-Cross v. Motorola, Inc., Defendant-Appellant-CrossCourt of Appeals for the Fifth Circuit · 1975
- Kenneth White v. Mar-Bel, Inc., and Mr. Dan MarshlackCourt of Appeals for the Fifth Circuit · 1975
- Continental Oil Company, Cross-Appellee v. Jimmy R. Cole, D/B/A Jim R. Cole & Associates and Cole Development Co. Inc., Cross-AppellantsCourt of Appeals for the Fifth Circuit · 1981
- John Zink Company, Cross-Appellant v. National Airoil Burner Company, Inc., Cross-AppelleeCourt of Appeals for the Fifth Circuit · 1980
22 more not listed; retrieve them via the Exa API.