Canton Steel Roofing Co. v. Kanneberg
U.S. Circuit Court for the District of Northern Ohio
In Equity. Bill by the Canton Steel Roofing Company against Alvin C. and William Kanneberg, doing business as the Kanneberg Roofing Company, to restrain infringement, and for an accounting, as to letters patent No. 188,079, issued March 6, 1877, to Henry W. Smith, for an. improvement in sheet metal roofing.
1Opinion of the Court
Taft, Circuit Judge.
This is a bill in equity to enjoin the alleged infringement of a patent for an improvement in sheet metal roofing. The defenses raised by the answer and on the proofs are—First, that complainant has not title to the patent relied on; second, that no manufacture of the alleged infringement by the respondents occurred previous to the filing of the bill; third, that the patented device relied on by complainant has no novelty; fourth,' that the improvement in sheet metal roofing manufactured by respondents since the filing of the bill is not an infringement of the patent sued,…
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