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Keywords

contractplaintiffdamagestestimonypatentexpert witnesswitness testimonyrelevanceadmissibility

contractplaintiffdamageswillpatentexpert witness

Related Cases

DSU Medical Corp. v. JMS Co., Inc., Not Reported in F.Supp.2d, 2003 WL 25709023

Facts

The case involves a dispute regarding the admissibility of expert witness testimony related to patent infringement damages. The plaintiff sought to have Dr. Degnan testify about a hypothetical contract between Medisystems and Fresenius, as well as damages calculations based on sales of a noninfringing substitute product, the WingEater needle guard. The court evaluated the relevance and admissibility of this testimony in the context of patent law.

Dr. Degnan, the proffered expert witness, will not be allowed to testify as to the hypothetical existence or hypothetical terms of a contract between Medisystems and Fresenius as proffered by the plaintiff.

Issue

Whether Dr. Degnan should be allowed to testify about hypothetical contracts and damages based on noninfringing substitute products.

Rule

The court ruled that expert testimony regarding hypothetical contracts is inadmissible if it does not pertain to actual agreements. Additionally, sales of acceptable noninfringing substitute products cannot form the basis for legally compensable patent damages.

Additionally, the Court finds that sales of acceptable noninfringing substitute products cannot be the basis of legally compensable patent damages.

Analysis

In applying the rule, the court determined that Dr. Degnan's proposed testimony regarding a hypothetical contract was not relevant to the actual case at hand. Furthermore, the court emphasized that patent damages must be based on actual infringement, not on sales of products that do not infringe on the patent.

the Court finds that sales of acceptable noninfringing substitute products cannot be the basis of legally compensable patent damages, and Dr. Degnan will not be allowed to testify as to any calculation or measure of patent infringement damages based upon any sale of the WingEater needle guard as it is an acceptable noninfringing substitute product.

Conclusion

The court concluded that Dr. Degnan would not be permitted to testify regarding the hypothetical contract or the damages related to the noninfringing substitute product.

Dr. Degnan will not be allowed to testify as to the hypothetical existence or hypothetical terms of a contract between Medisystems and Fresenius as proffered by the plaintiff.

Who won?

The court ruled against the plaintiff, determining that the proposed expert testimony was inadmissible. This decision was based on the principle that damages must be tied to actual infringement rather than hypothetical scenarios or noninfringing products.

the Court finds that sales of acceptable noninfringing substitute products cannot be the basis of legally compensable patent damages.

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