Gregory Leighton

Mark R. Galis is a top attorney recognized by Best Lawyers in the practice area(s) of Patent Law and Trademark Law. Mark R., who practices law in Chicago, Illinois, has been recognized since 2016. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Mark R. is held by other top lawyers in the same geographic and legal practice area.

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

Jason focuses on complex disputes and transactions relating to software and networking technologies. He works with a variety of businesses—from startups to Fortune 500 companies—to aggressively resolve intellectual property (IP) matters. He has litigated copyright infringement, trade secret misappropriation, patent infringement, trademark infringement, breach of contract, and related claims. Jason has also represented clients in disputes pertaining to ownership of IPv4 address blo...

James C. Franczek, Jr. is a top attorney recognized by Best Lawyers in the practice area(s) of Employment Law - Management, Labor Law - Management and Litigation - Labor and Employment. James C., who practices law in Chicago, Illinois, has been recognized since 1989. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which James C. is held by other top lawyers in the same geographic and legal practice area.

Jason S. Ornduff advises high net worth families, business owners, executives, professionals and celebrities on state and federal laws regarding wealth transfer to the next generation, including estate planning, estate and trust administration, and estate and gift tax issues. Jason also counsels closely-held companies on various legal issues, especially in the areas of succession planning. Jason is a past president of the Greater North Shore Estate and Financial Planning Council. He is also a...

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

ATTORNEY FOR PRODUCT LIABILITY AND AVIATION LAW Richard Burke is a partner at Clifford Law Offices. He is an outstanding product liability attorney and one of the most respected aviation liability attorneys in Chicago. Mr. Burke is experienced in many complex practice areas including medical malpractice, nursing home negligence, heavy truck litigation, product liability, aviation liability, aviation litigation, airline liability, and other forms of transportation liability. Over his decades o...

Kathy Roe, an attorney, is a founding principal of Health Law Consultancy in Chicago. Health Law Consultancy provides strategic legal counsel to enable health industry participants to manage the challenges and capitalize on the opportunities of the evolving health system. Roe’s experience, gained from nearly two decades of successfully representing health industry clients, covers health information technology initiatives; health information privacy, data security and electronic transact...

Tom is a Shareholder and Chairs the Patents and Intellectual Property Sections. An experienced attorney most active in patent prosecution, portfolio management and providing opinions of counsel, Tom drafts and prosecutes U.S. and foreign patent applications; renders non-infringement, validity, patentability and inventorship opinions; drafts and interprets license, indemnification, employment and non-complete agreements; prepares and prosecutes trademark and copyright registrations; and counse...

Richard K. Johnson is a top attorney recognized by Best Lawyers in the practice area(s) of Workers' Compensation Law - Claimants. Richard K., who practices law in Chicago, Illinois, has been recognized since 2009. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Richard K. is held by other top lawyers in the same geographic and legal practice area.