David A Haas

IAM Research

The Patent 1000 focuses exclusively on patent practice and has firmly established itself as the definitive 'go-to' resource for those seeking world-class legal patent expertise.

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Stout’s integration of valuation, damages and compliance professionals with investment bankers and technical experts underpins its 360-degree proficiency in intellectual property, which is its defining edge. Central to its practice is the provision of testimony in IP litigation, with its multi-disciplinary setup enabling it to provide all-embracing support to trial teams as needed. The group has grown in significant ways in the past year, with the addition of Dana Trexler in June 2020 and of Mitch Rosenfeld one month later. Philadelphia-based Trexler emphasises disputes in his practice, and has engaged in complex patent and other IP infringement matters and provided testimony in court on many occasions. Rosenfeld has a more transactions and advisory-focused role and understands all aspects of patenting, which serves him well when he is called on for litigation. They are members of a collaborative, well-resourced team that includes David Haas, John Bone and Scott Weingust in Chicago; and Michele Riley and Stephen Holzen in DC. Haas captains the IP practice with aplomb and draws from a deep well of knowledge accumulated over the course of 30-plus years; he has the trial lawyer’s ability of being able to simplify the complex for the benefit of laypeople. At the same level in terms of experience, Bone is masterful in the context of conflicts involving SEPs. Weingust takes the reins of the valuation practice and, as a seasoned testifier, is also integral in the success of the disputes, compliance and investigations group. Riley is an innovator, educator and damages expert par excellence; while Holzen has brought his insight to bear in the ITC and PTAB, along with many federal and state courts, and is one of the few, if not the only individual recommended in this section with a patent examining background at the USPTO.

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