Barry P. Meister

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...

Peter H. Lieberman is Co-Chair of the Chicago Corporate & Securities Practice. He has more than 20 years of broad experience in mergers and acquisitions, public company, and hedge fund matters, private equity, start-up and venture capital, and related securities regulation issues. Peter brings to his work a diverse transactional background, including a decade-long involvement in hedge fund transactions and securities trading and hedging issues. He has been involved in scores of PIPE and r...

Maureen O'Brien is a partner in the Chicago office of Kirkland & Ellis LLP. Maureen's practice includes a broad range of employee benefits and executive compensation matters, and she has extensive experience with the M&A aspects of employee benefits and executive compensation, including strategic and private equity transactions. Maureen advises clients on the design and implementation of qualified and nonqualified retirement plans, welfare plans, Section 409A matters and equity and in...

Sharon Hwang is a member of the Executive Committee and a Shareholder at McAndrews. She practices in all areas of intellectual property law with particular emphasis on patent litigation. She helps her clients maximize the value of their intellectual property and protect their investments in research and development. She has extensive experience in a range of technologies, including medical devices, electronics, and cellular telephony. First, and foremost, Sharon is a hands-on courtroom advoca...

Mark Hagedorn advises on a wide variety of intellectual property matters, including patent, trademark and copyright solicitation and IP litigation, licensing and counseling. Appreciated for his honesty and practical legal advice, Mark consistently delivers utilitarian solutions that help his clients resolve disputes and litigation efficiently and economically. Mark offers broad experience in virtually all phases of IP counseling and litigation. He understands and has represented clients invol...

M. Christine Graff is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. M. Christine, who practices law in Chicago, Illinois, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which M. Christine is held by other top lawyers in the same geographic and legal practice area.

Todd Rowe is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Insurance. Todd, who practices law in Chicago, Illinois, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Todd is held by other top lawyers in the same geographic and legal practice area.

Marc H. Trachtenberg is a top attorney recognized by Best Lawyers in the practice area(s) of Advertising Law and Trademark Law. Marc H., who practices law in Chicago, Illinois, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Marc H. is held by other top lawyers in the same geographic and legal practice area.

Stephen Reynolds (CIPP/US, CISSP) advises some of the largest companies in the world on complex data security and privacy matters. A former computer programmer and IT analyst, Stephen is uniquely able to use his computer background to the advantage of his clients in matters involving data security, privacy, artificial intelligence and computer forensic investigations. He assists with responding to cybersecurity incidents, such as ransomware attacks, fund transfer fraud, data breaches and busi...

Susan M. Franzetti has extensive experience in compliance counseling, regulatory and litigation matters. Ms. Franzetti has extensive experience in water pollution matters under both federal and state programs, including issues relating to NPDES and industrial pretreatment discharge permits, effluent toxicity, TMDLs, use attainability analyses, wetlands, CSO’s/SSO’s, rule-making proceedings, variances/site-specific relief, mixing zone demonstrations, antidegradation, antibackslidin...