Conceptus, Inc. v. Hologic, Inc., No C 09-02280 WHA, 2010 WL 3911943 (N.D. Cal. Oct. 5, 2010)

Key Insight: Where plaintiff had previously produced a particular two page letter in prior litigation but was unaware of that production because it was not used in any deposition or pleading in that case, and where plaintiff?s counsel agreed, in subsequent litigation, to produce those documents that were previously produced in the prior litigation, which included the letter, and did not conduct a privilege review because of the belief that such a review had been conducted before production in the prior litigation, the court found that plaintiff did not take reasonable steps to prevent the disclosure and therefore waived privileged and reasoned, in part, that ?[m]erely asserting that prior counsel inadvertently disclosed the letter does not meet the burden of proof,? citing Plaintiff?s failure to describe the circumstances surrounding the letter?s original production or any steps to prevent the disclosure

Electronic Data Involved: two page letter