Legal Opinion
Johnson Chair Co. v. Milwaukee Chair Co.
District Court, E.D. Wisconsin
Decided April 4, 1941No. Civ. No. 4939PublishedCited by 1 opinion
1Opinion of the Court
DUFFY, District Judge.
This is a suit based on alleged infringement of Johnson Reissue Patent No. 18,-913. The defense is invalidity because of lack of invention over the prior art; invalidity of the reissue patent because of inclusion of new matter, and no foundation for same in the specifications or drawings ; and noninfringement.
On July 14, 1927, Walter J. Johnson and Arthur L. Johnson filed application for patent relating to improvements in chair backs for the type of chair commonly used by stenographers. On July 1, 1930, there was issued Letters Patent No. 1,769,294; and on August 8,…
2Cases cited4 opinions
- Permutit Co. v. Graver Corp.Supreme Court of the United States · 1931
- Weil Pump Co. v. Chicago Pump Co.Court of Appeals for the Seventh Circuit · 1934
- Young Radiator Co. v. Modine Mfg. Co.Court of Appeals for the Seventh Circuit · 1931
- Ajax Mfg. Co. v. National Mach. Co.Court of Appeals for the Sixth Circuit · 1937
3Cited by1 opinion
- Water Hammer Arrester Corp. v. TowerDistrict Court, E.D. Wisconsin · 1944