Mark D. Werner

Mary Bassi is a top attorney recognized by Best Lawyers in the practice area(s) of Patent Law. Mary, who practices law in Chicago, Illinois, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Mary is held by other top lawyers in the same geographic and legal practice area.

Marta K. Davidson is a top attorney recognized by Best Lawyers in the practice area(s) of Personal Injury Litigation - Plaintiffs and Product Liability Litigation - Plaintiffs. Marta K., who practices law in Chicago, Illinois, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Marta K. is held by other top lawyers in the same geographic and legal practice area.

John M. Dickman is a top attorney recognized by Best Lawyers in the practice area(s) of Employment Law - Management. John M., who practices law in Chicago, Illinois, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which John M. is held by other top lawyers in the same geographic and legal practice area.

Jason focuses on complex disputes and transactions relating to software and networking technologies. He works with a variety of businesses—from startups to Fortune 500 companies—to aggressively resolve intellectual property (IP) matters. He has litigated copyright infringement, trade secret misappropriation, patent infringement, trademark infringement, breach of contract, and related claims. Jason has also represented clients in disputes pertaining to ownership of IPv4 address blo...

Daniel S. Kirschner is a partner at the Chicago plaintiffs’ law firm of Corboy & Demetrio. As a trial lawyer, Mr. Kirschner represents victims of catastrophic personal injury, wrongful death and medical malpractice. Mr, Kirschner has successfully handled cases against many of the nation’s largest insurance companies and corporations at the pretrial, trial and appellate levels in state and federal court in Illinois and throughout the United States.Mr. Kirschner concentrates his...

Thomas J. Wimbiscus, a shareholder with McAndrews, has more than thirty years of experience and practices in all areas of intellectual property litigation, with a special emphasis on patent and trademark litigation. He has appeared in over 100 litigations and over 100 inter partes reviews (IPRs). He was named one of the 10 most active IPR practitioners in the U.S. for patent owners. (Patexia 2018.) Tom was named as one of the world’s leading patent professionals by IAM Patent 1000 in 20...

Born and raised in the Chicagoland area, John grew up working in his family’s restaurant and then stayed local attending both Northwestern University (B.A.) and Notre Dame Law School (J.D.). As a first generation Greek American, John witnessed the difficulties that immigrants can experience while adapting to a new culture. He also experienced the importance of community in helping people to assimilate and understand how to become part of that new culture. He is fluent in Greek and has b...

Matthew J. Fischer is a top attorney recognized by Best Lawyers in the practice area(s) of Mass Tort Litigation / Class Actions - Defendants and Product Liability Litigation - Defendants. Matthew J., who practices law in Chicago, Illinois, has been recognized since 2012. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Matthew J. is held by other top lawyers in the same geographic and legal practice area.

Juli Gumina is a top attorney recognized by Best Lawyers in the practice area(s) of Collaborative Law: Family Law, Family Law and Family Law Mediation. Juli, who practices law in Naperville, Illinois, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Juli is held by other top lawyers in the same geographic and legal practice area.

Allan Muchin co-founded the law firm that bears his name. What began in 1974 as the 24-attorney firm Katten Muchin Zavis has today become Katten Muchin Rosenman LLP, with more than 600 attorneys worldwide. Allan began his legal career as a trial attorney for the Internal Revenue Service. When he helped launch Katten Muchin Zavis, he and his partners set out to create a law firm that was innovative, specialized and entrepreneurial. His practice concentrated on advising corporations, partnershi...