Superior Court Addresses the Parameters of the 'Common Interest Privilege' Under the Related Attorney-Client Privilege

In the case of Solid Waste Services, Inc. v. Ember Partners, LP, No. 1674 EDA 2025 (Pa. Super. June 9, 2026 Lazarus, P.J., Panella, P.J.E., and Stevens, P.J.E.) (Op. by Panella, P.J.E.), the Superior Court addressed discovery issues in a civil litigation dispute.

A primary issue addressed was whether a trial court Order granting a Motion to Compel production of documents withheld by a Defendant should be affirmed.

On appeal, the Defendant that was subject to the Motion to Compel was relying upon the somewhat novel “common interest” privilege to contend that they were legally entitled to withhold certain requested documents under a related attorney-client privilege argument

On appeal, the Superior Court noted that it agreed with the trial court’s findings that, while there may have been a common interest between the applicable parties earlier in the negotiations and dealings between the parties, the record revealed that there was no evidence of a common interest at the times relevant to the subject lawsuit. 

The Superior Court also found that the Defendant that was subject to the Motion to Compel Order did not meet their burden of proving the existence of an agreement to share the common interests privilege at any time. 

Accordingly, the Superior Court affirmed the trial court finding that the common interest doctrine did not protect attorney-client communications shared with a third-party because the Defendant at issue failed to prove an agreement to pursue a shared legal strategy and also failed to show any continuing common legal interest at the relevant times in the lawsuit.

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Source: The Legal Intelligencer State Appellate Case Alert, www.Law.com (June 30, 2026).

Source of image:  Photo by Sasun Bughdaryan on www.unsplash.com.