Ashley D. Davis

Garret Leach is a nationally recognized first chair trial lawyer who focuses on patent and other intellectual property litigation. He is a registered patent attorney and has successfully led litigation teams in district courts throughout the country as well as at the International Trade Commission. He has also argued for his clients before the U.S. Court of Appeals for the Federal Circuit and the Patent Trial and Appeal Board. His appellate arguments include a successful argument in front of ...

James H. Whalen is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Insurance. James H., 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 James H. is held by other top lawyers in the same geographic and legal practice area.

Mr. Sevin concentrates his practice exclusively in the area of family law, representing parties in the litigation and resolution of sophisticated matrimonial and family related matters. He counsels clients on a wide range of divorce-related issues including custody disputes, analysis of complex financial matters, prenuptial and postnuptial agreements, and the disposition of marital and non-marital assets. Mr. Sevin’s peers and colleagues have recognized him as a leading advocate for his...

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...

Jeremy is a real estate attorney with nearly 25 years of experience who acts as a true counselor to his clients. Learning first the business and objectives of his clients, Jeremy utilizes his broad wealth of legal and market knowledge to aid his clients in the successful structuring and execution of their transactions and business goals, balancing strong advocacy with measured deal-making spirit. Ultimately, Jeremy’s goal is to be a long-term strategic partner to his clients. Jeremy is ...

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

Partner James M. Quigley is widely regarded as a highly-esteemed and experienced Illinois Divorce/Family Law attorney and litigator. Mr. Quigley has successfully tried complex financial, custody, removal and other contested cases in Cook, Lake, DuPage, and other counties throughout the state of Illinois, since 1992. Quigley attended and graduated from the University of Wisconsin–Madison, obtaining a Bachelor of Arts degree in Journalism in 1989. James originally hoped to combine his lov...

David Koropp is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation. David, 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 David is held by other top lawyers in the same geographic and legal practice area.

John O’Neil’s legal knowledge, business savvy, and leadership of complex transactions have earned him a reputation as a global leader in private equity fund matters. John heads the Investment Funds Practice Group, the Firm’s leading-edge global platform that provides innovative and bespoke legal strategies to sponsors and funds of all kinds. John is also a member of the Firm's Executive Committee. John has been recognized by Chamber’s Global, Chambers USA, IFLR 1000, L...

Susan is highly regarded nationally in the area of health care reform and health and welfare benefits. She assists employers and health plans with their health care reform strategy and compliance with laws affecting group health plans, such as the Affordable Care Act (ACA), Health Insurance Portability and Accountability Act (HIPAA), Employee Retirement Income Security Act, the CARES Act, the Mental Health Parity and Addiction Equity Act, and the Internal Revenue Code. Susan also has extensiv...