Plaintiff filed a patent infringement action against several defendants. After the district court’s Markman decision, the parties filed cross-motions for summary judgment regarding patent infringement and the scope of damages. After denying the parties’ respective cross-motions for summary judgment, the district court addressed the defense motion for a limitation on damages due to plaintiff’s failure to properly mark his device.
The defendant argued that even if it did infringe the patent-in-suit, plaintiff would not be entitled to any damages for any infringement between the issuance of the patent and the filing of the complaint because plaintiff failed to mark his product with the patent number.
As the district court noted, “[a] patentee may only recover damages for patent infringement that occurs after the patentee provides notice to an accused infringer under 35 U.S.C. § 287(a).” Notice can be satisfied either by constructive notice or actual notice. Constructive notice is satisfied if the patentee marks the product consistently and continuously with the word patent or “pat.” and the patent number or, if the product cannot be marked, the product’s packaging can be marked. Actual notice is satisfied by an affirmative communication from the patentee regarding a specific charge of infringement by a specific accused product or device.
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