Amber B. Masha

Anthony Antognoli is a top attorney recognized by Best Lawyers in the practice area(s) of Employee Benefits (ERISA) Law. Anthony, 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 Anthony is held by other top lawyers in the same geographic and legal practice area.

Nick Kahlon’s approach to litigation is straightforward: out-think and out-prepare the other side. His ease in court is grounded in the knowledge that he has thought through and planned for every detail, and his ease with clients comes from a deep understanding of their business needs. Nick’s practice focuses on complex commercial litigation, including noncompetes, class actions, patent cases, and other significant business disputes. He has represented some of the largest companie...

Aaron D. Charfoos is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Intellectual Property. Aaron D., 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 Aaron D. is held by other top lawyers in the same geographic and legal practice area.

Matthew P. Walsh II is a top attorney recognized by Best Lawyers in the practice area(s) of Construction Law. Matthew P., 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 Matthew P. is held by other top lawyers in the same geographic and legal practice area.

Michael P. Chu focuses his practice on all aspects of patent law, including complex litigation, opinions and prosecution. He serves as the Local IP Litigation Practice Group Leader in McDermott’s Chicago office. Mike is also the Chair of the Firm’s Racial & Ethnic Diversity Committee. Read full biography: https://www.mwe.com/people/chu-michael-p/

Timothy R. Conway is a founding partner of Conway & Mrowiec. He is currently of counsel to Conway & Mrowiec Attorneys LLLP, a four-lawyer Chicago firm which represents all participants in the construction process: contractors, design/builders, engineers, construction managers, trade contractors, architects, owners and sureties. Mr. Conway is a veteran of numerous arbitrations, trials, and mediations. He has represented builders on a wide variety of construction projects, both public a...

Jennifer J. Kalas is a top attorney recognized by Best Lawyers in the practice area(s) of Mass Tort Litigation / Class Actions - Defendants. Jennifer J., who practices law in Schererville, Indiana, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jennifer J. is held by other top lawyers in the same geographic and legal practice area.

Nick wins cases for clients and helps them favorably resolve disputes, including complex partnership, corporate governance, finance, and deal disputes. As a first-chair trial lawyer who has tried more than 30 jury trials, bench trials, and arbitrations, when a rare business case goes to trial, other law firms and clients ask him to join or lead the trial team. Nick splits his time between Barack Ferrazzano’s Minneapolis and Chicago offices, although he regularly appears in courts across...

Mark Grossmann is global chair of Katten's Corporate practice. Mark knows how to make deals happen. For more than 20 years, he has guided principals and finance sources alike through critical transactions that have helped them grow, compete and realize value. He is known for a refreshingly direct approach that cuts away extraneous issues and gets to the heart of what the parties need. Mark knows that lawyers are often seen as obstacles who can bury the deal in the legal details. He takes a di...

William J. Serritella, Jr. is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation. William J., who practices law in Chicago, Illinois, has been recognized since 2019. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which William J. is held by other top lawyers in the same geographic and legal practice area.