Larami Corp. v. Amron
United States District Court for the Eastern District of Pennsylvania
27 U.S.P.Q.2d 1280 (1993)
Relevant factsFree
TTMP (defendants) held a patent for a water gun with an "elongated housing having a chamber therein for a liquid"; Larami's (plaintiff) Super Soaker instead used an external water reservoir detachable from the gun's housing, with no liquid chamber inside the housing itself. TTMP counterclaimed for literal patent infringement, and Larami moved for partial summary judgment on that claim.
IssueFree
Whether the absence of even one element of a patent's claim from the accused product precludes a finding of literal infringement.