William P. "Bill" Ziegelmueller

Kathryn Siegel is a top attorney recognized by Best Lawyers in the practice area(s) of Employment Law - Management. Kathryn, who practices law in Chicago, Illinois, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Kathryn is held by other top lawyers in the same geographic and legal practice area.

Household names in the technology and entertainment sectors and famous brands in all areas of consumer products and services rely on Kristin as an advocate and trusted advisor on IP, general advertising and competition issues. She has counseled multinational clients in multiple high-profile disputes involving novel ecommerce issues. She also gives strategic advice to clients on exploiting their copyrights and trademarks over social media, and on how to best protect their IP rights in software...

John has more than 40 years of experience advising hundreds of financial institutions and their boards on mergers and acquisitions, bank regulatory issues, corporate governance, and securities law matters. John is straight-forward, a good sounding board and strategic thinker, meticulous, and personable. John is the founder and former co-chair of Barack Ferrazzano’s Financial Institutions Group and has advised hundreds of financial institutions on strategic, corporate governance and othe...

Michael J. Baum is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. Michael J., who practices law in Chicago, Illinois, has been recognized since 2016. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Michael J. is held by other top lawyers in the same geographic and legal practice area.

Harry J. Secaras is a top attorney recognized by Best Lawyers in the practice area(s) of Employment Law - Management and Labor Law - Management. Harry J., who practices law in Chicago, Illinois, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Harry J. is held by other top lawyers in the same geographic and legal practice area.

Andrew advises public and private companies on plan design and administration, fiduciary responsibility, claims procedures, and disclosure requirements under ERISA, the Internal Revenue Code, and other laws. He has extensive experience guiding them regarding the legal, financial, and administrative issues that affect qualified and nonqualified retirement plans, health and welfare plans, and other employee benefit arrangements, including issues that arise during mergers, acquisitions, and othe...

Joe Madonia is leader of the firm’s Environmental Litigation team. For more than 25 years, Joe has defended and counseled clients on a wide array of toxic tort and environmental matters at the local, regional and national levels. Joe delivers strong skills as a litigator, multifaceted trial experience, and the regulatory know-how and scientific depth needed to problem-solve at virtually any level of sophistication or difficulty. His experience includes serving as national trial counsel ...

Lorraine M. Tyson is a top attorney recognized by Best Lawyers in the practice area(s) of Public Finance Law. Lorraine M., 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 Lorraine M. is held by other top lawyers in the same geographic and legal practice area.

Marc S. Silver is a top attorney recognized by Best Lawyers in the practice area(s) of Insurance Law. Marc S., 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 Marc S. is held by other top lawyers in the same geographic and legal practice area.

Dunstan H. Barnes is a Partner at McAndrews and practices in all areas of intellectual property law with emphasis on protecting and analyzing design rights. His work in that area includes drafting and prosecuting design patent applications and conducting opinion work and due diligence investigations. In addition, Dunstan has considerable experience drafting and prosecuting utility patent applications and trademark applications across a range of technological fields and industries. As a practi...