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Recent Court Decisions Regarding Actual Notice of Patent Infringement

By Patrick Fay and Anita Chang
August 01, 2005

Consider the following hypothetical situation. Mr. Jones, an engineer with your Company XYZ, informs you that a supplier for XYZ saw a rival company's Product X, which appeared quite similar to the one currently in development at XYZ. Mr. Jones tells you that representatives of XYZ had mentioned that Product X is patented. Should you (a) disregard what Mr. Jones has told you, (b) await word from attorneys for Product X, (c) contact attorneys for Product X to discuss possible infringement issues, or (d) request a formal opinion from outside counsel?

The understanding of what constitutes notice in regard to damages for patent infringement has evolved considerably over the years. Federal statutes have been interpreted to require varying degrees of notice in determining damages for patent infringement. 35 U.S.C. '287(a) limits damages and remedies available through the requirement of either constructive or actual notice. “The purpose of actual notice is met when the recipient is notified, with sufficient specificity, that the patent holder believes that the recipient is an infringer.” SRI Int'l v. Advanced Tech. Lab, Inc., 127 F.3d 1462, 1470 (Fed. Cir. 1997). Customarily, actual notice is achieved: 1) by sending the recipient a cease and desist letter identifying a patent and a specific activity believed to be infringing, along with a proposal to remedy the situation; or 2) by the filing of a complaint. However, recent rulings by the Court of Appeals for the Federal Circuit (“CAFC”) have accepted district court findings of actual notice (eg, to support determination that infringement was willful) based on a more expansive understanding of this term. Offers of, or requests for, licenses have been considered sufficient and actual notice has been found without specific knowledge of an infringement problem. In addition, actual notice has been found even when communications were made to someone other than the alleged infringer.

As described above, 35 U.S.C. '287(a) requires either constructive notice, achieved by appropriately marking a product with the patent number, or actual notice. Sufficiency of notice is a question of fact that will be overturned by the CAFC only when clearly erroneous. If there is no constructive notice, the patentee may recover damages only for infringement after actual notice. Actual notice triggers an affirmative duty of care to determine whether one's actions may constitute a genuine patent infringement, while constructive notice does not. Imonex Servs., Inc. v. W. H. Muzprufer Dietmar Trenner GmbH, 2005 U.S. App. LEXIS 9334, *5 (Fed. Cir. 2005). If the patent is willfully infringed, the court has the option of increasing actual damages by as much as three times. Furthermore, 35 U.S.C. '285 allows an award of attorneys' fees for “exceptional cases” and courts have determined that willful infringement satisfies the exceptional case rule. See Imonex Servs., Inc., 2005 U.S. App. LEXIS 9334. Whether infringement has been willful is determined based on the totality of the circumstances, including actions of the alleged infringer after receiving actual notice (eg, obtaining opinions of counsel). See Read Corp. v. Portec, Inc., 970 F.2d 816, 826-827 (Fed. Cir. 1992).

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