Legal Opinion
PPG Industries, Inc. v. Guardian Industries Corp.
District Court, N.D. Ohio
Decided January 26, 1977No. C 72-71PublishedCited by 2 opinions
1Opinion of the Court
OPINION AND ORDER
WALINSKI, District Judge.
PPG Industries, Inc. [hereafter PPG] brought this action charging Guardian Industries Corporation [hereafter Guardian] with infringement upon eleven of its patents. Two of the patents, Nos. 3,223,501 and 3,293,015, originated as the result of development work carried out at PPG. The remaining nine patents, Nos. 3,281,229, 3,282,447, 3,291,590, 3,332,759, 3,332,760, 3,332,762, 3,338,697, 3,399,042, and 3,402,036 originated as the result of development work carried out at Permaglass, Inc. [hereafter Permaglass], a corporation which merged into Guardian…
2Cases cited24 opinions
- Levitt v. BouvierSupreme Court of Delaware · 1972
- Sterling v. Mayflower Hotel Corp.Supreme Court of Delaware · 1952
- Hapgood v. HewittSupreme Court of the United States · 1886
- Lane & Bodley Co. v. LockeSupreme Court of the United States · 1893
- Bokat v. Getty Oil CompanySupreme Court of Delaware · 1970
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3Cited by2 opinions
- Ppg Industries, Inc., (77-3166), (77-3167) v. Guardian Industries Corporation, (77-3166), (77-3167)Court of Appeals for the Sixth Circuit · 1979
- Domanske v. Rapid-American Corp.New Jersey Superior Court Appellate Division · 2000