Jenner & Block offers significant expertise in complex commercial litigation, and acts for large corporations in federal and state trials. Retains a standout practice in IP litigation, with a specialism in music royalty disputes. Active across a number of sectors, including energy and financial services. Can also draw on the firm's notable experience in appellate matters.

"Jenner & Block has a tremendous work ethic and is responsive."

"I'm consistently impressed at the quality of their work. They have a deep bench."

Jenner & Block defended Hyatt Hotels against a class action concerning resort amenities fees.

David DeBruin secures excellent results for a diverse client base, ranging from energy companies to Native American tribes, in high-stakes litigation. He offers significant experience in M&A litigation and False Claims Act cases, as well as in appellate proceedings.
"What makes David stand out is being tremendously smart, having a tremendous work ethic and being responsive not only to the issue at hand, but the overall timeline of a matter." "David is a great litigator with great judgment. He's a strong, analytical lawyer and a grounded, smart thinker regarding strategy."

Thomas Perrelli currently serves as chair of Jenner & Block. He is well regarded in the market for his expertise in high-profile litigation, regularly acting for government bodies and corporations from a wide range of sectors.
"He has a breadth of knowledge and experience. He has good counseling judgment and knows what is important for a case and client." "He's extremely thoughtful and is a very good problem solver."