John R. Mussman

As a partner in the Intellectual Property practice group, Jeff focuses his work on patent litigation and strategic counseling related to pharmaceutical, chemical, biotechnology, electrical engineering, agricultural and food products. A registered patent attorney with four decades of experience, Jeff has successfully represented both patent owners and patent challengers through all stages of federal litigation and appeals. A significant portion of Jeff’s practice includes advising pharma...

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

Jonathan Marks helps clients — often large insurers — develop investigation, claims handling and litigation strategies to detect, prevent and deter fraud. As an Assistant US Attorney, Jonathan tried numerous federal jury trials and argued appeals before the US Court of Appeals. As a lawyer in private practice, Jonathan has handled hundreds of insurance fraud investigations and dozens of fraud litigation matters. At every stage of counseling, investigation, litigation and in court,...

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.

Devon C. Bruce is a top attorney recognized by Best Lawyers in the practice area(s) of Personal Injury Litigation - Plaintiffs and Product Liability Litigation - Plaintiffs. Devon C., 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 Devon C. is held by other top lawyers in the same geographic and legal practice area.

Michael J. Lubeck is a top attorney recognized by Best Lawyers in the practice area(s) of Personal Injury Litigation - Plaintiffs. Michael J., 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 Michael J. is held by other top lawyers in the same geographic and legal practice area.

I am a divorce and family law attorney with a very strong financial background as a CPA with a Masters of Tax Law. I am Partner at the firm Harrison, LLP with offices in downtown Chicago. The divorce process can be complicated and overwhelming. I make sure my clients understand why we are taking each step through this process. I look at the entire situation objectively, always with an eye on the end result; working with my clients to find the best solutions for them and their families. With m...

Michael, chair of the firm’s Intellectual Property practice group, provides strategic counsel to established enterprises and entrepreneurs concerning the development and protection of extensive global intellectual property portfolios. He represents clients from a wide range of industries, including consumer electronics, restaurants, retail housewares, beverage manufacturing, software, entertainment and a variety of technology-focused industries. Michael has served as lead counsel in tri...

Timothy Ray is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation. Timothy, who practices law in Chicago, Illinois, has been recognized since 2018. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Timothy is held by other top lawyers in the same geographic and legal practice area.

Matthew J. Fischer is a top attorney recognized by Best Lawyers in the practice area(s) of Mass Tort Litigation / Class Actions - Defendants and Product Liability Litigation - Defendants. Matthew J., who practices law in Chicago, Illinois, has been recognized since 2012. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Matthew J. is held by other top lawyers in the same geographic and legal practice area.