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Keywords

appealsummary judgmentpatent
patent

Related Cases

Husky Injection Molding Systems Ltd. v. R & D Tool Engineering Co., 291 F.3d 780, 62 U.S.P.Q.2d 1834

Facts

Husky Injection Molding Systems Ltd. (Husky), the assignee of U.S. Patent No. RE33,237, which pertains to an injection molding machine for producing plastic preforms, filed a patent infringement suit against R & D Tool & Engineering Co. (R & D). R & D manufactured replacement molds and carrier plates for Husky's machines. The district court granted summary judgment in favor of R & D, concluding that the replacement parts were akin to permissible repair rather than reconstruction, thus not constituting patent infringement. Husky appealed this decision.

Issue

Did R & D's manufacture and sale of replacement molds and carrier plates for Husky's injection molding machine constitute contributory infringement of Husky's patent?

Did R & D's manufacture and sale of replacement molds and carrier plates for Husky's injection molding machine constitute contributory infringement of Husky's patent?

Rule

Analysis

The court analyzed whether R & D's replacement of the molds and carrier plates constituted reconstruction or permissible repair. It found that the molds and carrier plates were readily replaceable parts, as the design of the injection molding machine allowed for their replacement. Husky's own admission that no reconstruction occurs when parts are replaced for repair purposes supported this conclusion. The court also noted that typical customers would replace these parts every three to five years, further indicating that such replacements were within the rights of the machine owners.

Molds and carrier plates employed in patented injection molding machine used to produce plastic preforms were readily replaceable parts, so that replacement of molds and plates was akin to permissible repair and did not result in direct infringement of patent, and manufacturer of replacement molds and plates did not contributorily infringe patent, where design of machine allowed replacement, typical customers would replace molds and plates after five years, and holder of patent sold substitute molds and plates.

Conclusion

The court affirmed the district court's ruling, concluding that R & D did not infringe Husky's patent as the replacement of molds and carrier plates was akin to permissible repair.

We conclude that Husky's customers did not directly infringe the patent by replacing the molds and carrier plates; thus, R & D did not contributorily infringe the _237 patent.

Who won?

R & D Tool & Engineering Co. prevailed in this case because the court determined that the replacement of molds and carrier plates was permissible under the repair doctrine. The court emphasized that the parts in question were readily replaceable and that Husky's own practices acknowledged a market for replacement parts. This ruling underscored the principle that the owner of a patented machine has the right to modify it by substituting parts that are not separately patented, thus reinforcing the notion that such actions do not constitute patent infringement.

R & D Tool & Engineering Co. prevailed because the court found that the replacement of molds and carrier plates was akin to permissible repair rather than reconstruction, thus not constituting patent infringement.

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