Mark Mathys

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.

Robert A. Clifford is the founder and senior partner of Clifford Law Offices, a nationally recognized Chicago-based personal injury and medical malpractice firm known for its depth of talent, extensive resources, and unrelenting determination in handling complex personal injury and wrongful death litigation. Founded in 1984, the firm is ranked nationally and locally by Best Law Firms® in several practice areas, including aviation. Under Clifford’s leadership, the firm has recovered ...

Sanford E. Perl (Sandy) concentrates on the corporate, securities and tax aspects of complex business transactions, including leveraged buy-outs of public and private companies; strategic mergers, acquisitions, investments and joint ventures; venture capital and growth equity investments; divestitures; initial public offerings; private equity fund formations; executive compensation; and debt and equity restructurings and workouts. He manages transactions in a wide variety of industries, inclu...

Mr. Leavitt is a Founding Partner with Grund & Leavitt. He has litigated a number of high profile trials and appeals in both federal and state courts.Before becoming a partner in the firm, he served as a judge in the Circuit Court of Cook County, Illinois and as a justice on the Illinois Appellate Court. This followed 20 years in a successful private practice. The Chicago Bar Association remarked when evaluating him that "he enjoys impeccable credentials" and the Chicago Council of Lawyer...

Paul M. Markese is a top attorney recognized by Best Lawyers in the practice area(s) of Mass Tort Litigation / Class Actions - Defendants. Paul M., 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 Paul M. is held by other top lawyers in the same geographic and legal practice area.

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...

Michael Bonamarte IV is a skilled and passionate attorney who has achieved outstanding results in a number of high-profile nursing home, wrongful death, medical malpractice and personal injury cases. His commitment to his clients is rooted in a family legacy of love of the law and meaningful service to those in need, with a special respect and admiration for the elders that our society so often fails to honor. Professional Accolades & Leadership Roles Mike is a member of the Chicago Bar A...

Robert J. Cooney, Jr. is a top attorney recognized by Best Lawyers in the practice area(s) of Mass Tort Litigation / Class Actions - Plaintiffs. Robert J., 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 Robert J. is held by other top lawyers in the same geographic and legal practice area.

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

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