Aaron G. McCollough

Jack Carriglio represents clients in commercial disputes, including the prosecution and defense of cases relating to contracts, business torts, bankruptcy, securities, product defects, patents, copyrights, trade secrets, partnership disputes, malpractice and professional disciplinary matters, and real estate litigation. In addition, Jack has a substantial practice in representing corporations and individuals at the federal grand jury, trial, and appellate courts in various criminal matters in...

Peter J. McAndrews is a Shareholder at McAndrews and practices in all areas of intellectual property and complex technology law. He has been involved in all aspects of patent litigation, acquisition and counseling, involving a broad spectrum of electrical, biomedical and mechanical technologies. Peter is a US Patent and Trademark Office-to-Appeals Court patent attorney and litigator who helps his clients secure intellectual property rights, make smart decisions with those rights and litigate,...

Deborah L. Gersh is a top attorney recognized by Best Lawyers in the practice area(s) of Health Care Law and Privacy and Data Security Law. Deborah L., who practices law in Chicago, Illinois, has been recognized since 2015. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Deborah L. is held by other top lawyers in the same geographic and legal practice area.

Susan Daley is a partner with Perkins Coie and has more than 20 years of experience in the areas of executive compensation, securities and employee benefits. She is currently President of the Chicago Chapter of the National Association of Stock Plan Professionals, Chair of the Federal Securities Law Subcommittee of the Employee Benefits Committee of the American Bar Association Section of Taxation, and a member of the BNA Pension & Benefits Advisory Board. She is a former Chair of the Ill...

Ronald Safer manages complex, high-stakes cases with a focus in civil litigation. Ron has successfully represented companies and individuals in federal and state court involving matters such as commercial disputes, accounting fraud, tax fraud, anti-kickback violations, Foreign Corrupt Practices Act (FCPA), environmental violations, and securities fraud. He represents clients before the U.S. Department of Justice (DOJ), Securities and Exchange Commission (SEC), Financial Industry Regulatory Au...

Tonya is chair of the Litigation & Disputes practice group. She represents clients in complex civil litigation, products liability, insurance coverage and hospital property tax exemption matters. Her practice includes defense of state and federal products liability matters and representation of policyholders in insurance coverage matters, as well as the defense and prosecution of complex commercial litigation. She also counsels clients on complex risk management and insurance issues acros...

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

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

T. Markus Funk Ph.D. is a top attorney recognized by Best Lawyers in the practice area(s) of Criminal Defense: White-Collar. T. Markus, 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 T. Markus is held by other top lawyers in the same geographic and legal practice area.

For more than 30 years, Walter Weinberg has been advising private equity funds and other corporate clients as well as private equity professionals and executives. He represents sponsors in forming private equity and other funds as well as institutional investors and high-net-worth families who invest in this asset class. His years of experience and sound judgment in guiding clients through mergers and acquisitions (M&A), joint ventures, financings and other transactions allow him to offer...