Feinberg Day Kramer Alpert & Mulroy

Patent Litigation Summary: Feinberg Day Kramer Alpert & Mulroy

Feinberg Day Kramer Alpert & Mulroy is an intellectual property litigation boutique with a limited public profile. Public records indicate a predecessor firm, Feinberg Day, was founded in 2011 in Silicon Valley and focused on IP litigation. The firm has undergone several name changes, and the precise configuration of "Feinberg Day Kramer Alpert & Mulroy" does not correspond to a currently listed entity in major legal directories like Chambers & Partners or the AmLaw rankings. Its size and office footprint cannot be reliably determined from available sources.

Based on its tracked litigation, the firm's patent practice appears to focus on the defense of operating companies in the software and digital technology sectors. The attorneys associated with the firm have experience in patent disputes involving complex technologies. The authoritative case list shows the firm exclusively representing the defendant, suggesting a practice oriented towards defending clients against infringement claims.

The firm's most notable tracked matter is its role as lead defense counsel for Viant Technology LLC in a patent infringement lawsuit brought by Intent IQ LLC. This case involves patents related to digital advertising and cross-device user identification technologies. In a related proceeding, defendant Viant Technology also petitioned for an inter partes review (IPR) before the Patent Trial and Appeal Board (PTAB) in late 2024, challenging the validity of one of Intent IQ's patents. There is insufficient public data to assess the full scope or volume of the firm's PTAB practice.

Key attorneys credited in the firm's representative litigation include David L. Feinberg and David H. Day as lead counsel, and Michael J. Stirn as of counsel. Public profiles for attorneys with these names show affiliations with various national law firms. For instance, David L. Feinberg is a litigation partner in Venable LLP's Washington, D.C. office, and Michael Stern is a litigation associate at Winston & Strawn in Chicago. This may indicate that the "Feinberg Day" entity as listed in the case was a special-purpose litigation vehicle or a prior iteration of the current Silicon Valley boutique.