Thomas A. Marrinson

Michael R. Strong is a top attorney recognized by Best Lawyers in the practice area(s) of Energy Law. Michael R., 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 Michael R. is held by other top lawyers in the same geographic and legal practice area.

Ben Whiting is a top attorney recognized by Best Lawyers in the practice area(s) of Mass Tort Litigation / Class Actions - Plaintiffs. Ben, 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 Ben is held by other top lawyers in the same geographic and legal practice area.

Partner at McDermott Will & Emery -- 1991 - present Co-chairman at McDermott Will & Emery -- 2010-present Previously, head of Trial Department and head of White Collar Criminal Defense Practice Group. Served as an Assistant U.S. Attorney in the Northern District of Illinois from 1986-1991 focusing on the prosecution of white-collar crime.

Ana Valenzuela is a top attorney recognized by Best Lawyers in the practice area(s) of Immigration Law. Ana, 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 Ana is held by other top lawyers in the same geographic and legal practice area.

Grant H. Peters is a partner in the Chicago office of Barnes & Thornburg, a member of the Intellectual Property Department, co-chairman of the Climate Change Practice Group, a member of the Professional Responsibility Committee, and a member of the Internet and Technology Law, Advertising and Marketing, and Nanotechnology Practice Groups. Grant is an experienced attorney with a broad national and international practice focused on intellectual property development, management, protection, ...

Susan L. Novosad, Of Counsel, is a highly respected personal injury and wrongful death attorney in Chicago. With nearly 40 years of legal experience, she is known for her compassionate advocacy and relentless pursuit of justice for victims of medical malpractice, nursing home abuse, and catastrophic personal injury cases . Susan is also recognized for her exceptional negotiation skills, helping clients secure fair settlements while resolving disputes effectively. Susan’s legal career is...

Rachel Cantor’s practice focuses on the tax aspects of complex business transactions including domestic and cross-border mergers, acquisitions, and leveraged buyouts, as well as joint ventures, recapitalizations and debt and equity restructurings.Rachel has worked on numerous private equity, LBO and merger and acquisition transactions ranging from several million dollars to several billion dollars for clients including: Madison Dearborn Partners, Audax Group, Wind Point Partners, Levine...

Emer Simic is a partner in the Intellectual Property Practice Group and focuses her practice on patent litigation and counseling in the pharmaceutical and biotech space. Emer has substantial experience successfully representing pharmaceutical and biotech companies in Hatch-Waxman and patent infringement disputes before the U.S. District Court and before the Patent Trial and Appeal Board (PTAB). A strategic advisor and compelling advocate, Emer partners with her clients to achieve their goals ...

Catherine (Cate) A. Battin represents clients in state and local tax controversies at the audit, administrative and judicial levels in numerous jurisdictions. She provides national state tax strategies for clients on a full range of state tax issues, including income tax apportionment, nexus, combination and sales tax characterization of products and services. She has defended numerous internet sellers in cases brought under the Illinois False Claims Act alleging fraudulent failures to collec...

For more than 30 years, Craig Tobin has been recognized for his precedent-setting civil and criminal trial work and is nationally recognized as one of the best trial lawyers in America, regularly voted by his peers to “The Best Lawyers in America,” “Leading Lawyers” and “Leading American Lawyers.” . Throughout his career, Mr. Tobin has guided many clients through high-profile cases which attract intense media attention and have either changed or defined the...