Kenneth S. "Ken" Geller

Erika Harmon Arner is a nationally recognized leader in trial practice before the Patent Trial and Appeal Board (PTAB) and related appeals to the U.S. Court of Appeals for the Federal Circuit. She consistently ranks as one of the top three female attorneys appearing in PTAB trials and was named a PTAB Litigator of the Year by Managing Intellectual Property. She has argued and won a number of landmark cases at the PTAB and Federal Circuit for both patent challengers and patent owners. Erika&rs...

Kevin A. Ewing is a top attorney recognized by Best Lawyers in the practice area(s) of Energy Law and Environmental Law. Kevin A., who practices law in Washington, District of Columbia, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Kevin A. is held by other top lawyers in the same geographic and legal practice area.

Mr. Terpak is one of the premier Eminent Domain Lawyers in Virginia. He is editor of “Eminent Domain Law in Virginia” (2017), and is listed in BEST LAWYERS in the area of Eminent Domain. He has three times been named Best Lawyers LAWYER OF THE YEAR in the DC Metro area in the area of Eminent Domain, most recently for 2018. He has handled many hundreds of eminent domain (or condemnation) cases, including over 40 trials before juries and commissioners in every jurisdiction in Northe...

Jennifer Locke is a top attorney recognized by Best Lawyers in the practice area(s) of Trusts and Estates. Jennifer, who practices law in Washington, District of Columbia, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jennifer is held by other top lawyers in the same geographic and legal practice area.

Jeffrey J. Carlisle is a top attorney recognized by Best Lawyers in the practice area(s) of Communications Law. Jeffrey J., who practices law in Washington, District of Columbia, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jeffrey J. is held by other top lawyers in the same geographic and legal practice area.

Timothy J. Jessell is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law. Timothy J., who practices law in McLean, Virginia, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Timothy J. is held by other top lawyers in the same geographic and legal practice area.

James E. Croker, Jr. is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law. James E., who practices law in Washington, District of Columbia, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which James E. is held by other top lawyers in the same geographic and legal practice area.

Frank J. Pergolizzi is a top attorney recognized by Best Lawyers in the practice area(s) of Transportation Law. Frank J., who practices law in Washington, District of Columbia, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Frank J. is held by other top lawyers in the same geographic and legal practice area.

Alan S. Mark is a member of the firm’s Commercial Transactions , Financial Services , Real Estate , and Science & Technology Practice Groups. For the past 35 years, Mr. Mark has concentrated on corporate, commercial and real estate finance matters. He has served as outside counsel to numerous local, regional and national financial institutions, publicly traded biotechnology companies and hotel owners and operators. He has also served as outside counsel to information and telecommuni...

Bill Pittard is an experienced lawyer with a unique depth of government and litigation experience. Bill’s practice focuses on representing individuals and businesses with high-stakes problems. He particularly helps clients connected to the Legislative Branch, whether as officials of that branch or as individuals and businesses preparing for congressional hearings or otherwise responding to congressional inquiries. Over the past several years, for example, Bill has helped guide clients t...