“Good Cause” Not Required for Contention Amendments in the District of Delaware

In Bio Delivery Sciences International Incorporated v. Alvogen PB Research & Development LLC, a Delaware District Court recently denied the plaintiffs’ motion to strike two prior art references from the defendants’ supplemental invalidity contentions, reasoning that the defendants were not obligated, as the plaintiffs argued, to demonstrate good cause for the amendment.

The court noted that the case’s scheduling order did not contain a “good cause” requirement for amending contentions or a requirement that contentions be amended before the date on which the defendants served their amended contentions. The court reasoned that, while the amended contentions did need to comport with the requirements of Fed. R. Civ. P. 26, an analysis under the Pennypack factors did not require striking the references. In particular, the “possibility of curing the prejudice” and “likelihood of disruption of trial” factors militated strongly in the defendants’ favor because the plaintiffs did not need further discovery on the references and could address them easily in their expert reports, which would not have any impact on the trial date.

Interestingly, had these defendants been litigating in the District of New Jersey they would have been obligated to demonstrate “good cause,” where Local Patent Rule 3.7 requires a showing of “good cause” for any party to amend “contentions, disclosures, or other documents required to be filed or exchanged pursuant to [the District of New Jersey’s] Local Patent Rules.”

Gibbons P.C. will continue to monitor and report developments on the distinctions between patent practice in the District of New Jersey and other Federal District Courts.

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