Brent I. Clark

Stephen Reynolds (CIPP/US, CISSP) advises some of the largest companies in the world on complex data security and privacy matters. A former computer programmer and IT analyst, Stephen is uniquely able to use his computer background to the advantage of his clients in matters involving data security, privacy, artificial intelligence and computer forensic investigations. He assists with responding to cybersecurity incidents, such as ransomware attacks, fund transfer fraud, data breaches and busi...

Rebecca Fitzpatrick P.C. is a top attorney recognized by Best Lawyers in the practice area(s) of Environmental Law. Rebecca, 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 Rebecca is held by other top lawyers in the same geographic and legal practice area.

John Ratnaswamy founded his own law firm after having served as a co-founder and Partner at a nationally recognized energy boutique law firm. John has spent more than two decades counseling and representing electric and natural gas industry clients, including before utility commissions and on appeal. John has been selected for inclusion in The Best Lawyers in America© from 2010-2024 and was named its 2014 Chicago “Lawyer of the Year” in the field of Energy Law. John also has ...

Described by clients as a "phenomenal practitioner and extremely bright," Michael Hartz advises on business succession planning, tax-efficient wealth transfer into trusts for future generations and strategies for fulfilling philanthropic goals. Michael is ranked among the leading lawyers for private wealth law in Chambers High Net Worth, where his practical, effective solutions to complex problems have led to consistent recognition. With 40 years of experience in trust and estate planning and...

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.

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...

Brian Murphy has been in practice in Illinois since 1989. Initially in practice with an insurance defense firm, Williams & Montgomery, in 1991, Mr. Murphy joined Hofeld and Schaffner. Since that time, he has practiced catastrophic personal injury and wrongful death litigation on behalf of injured persons and their families. Mr. Murphy is a lifelong resident of Chicago, Illinois, and is licensed in Illinois. He has been admitted pro hac vice in Ohio, Michigan, Indiana and New York. He has ...

Monica A. Wallace focuses her practice on complex regulatory and transactional counseling to healthcare organizations, including health systems, hospitals, ambulatory surgery centers, physician groups, dental providers, integrated delivery systems, academic medical centers, DMEPOS and pharmaceutical manufacturers and suppliers, home health agencies, and venture capital and private equity firms and their health-related portfolio companies. Monica is a practice area leader for the Healthcare Re...

Tom’s practice focuses on trademark infringement and false advertising litigation. He has successfully represented some of the world’s most famous brands in federal courts and in the USPTO Trademark Trial and Appeal Board. His career-long focus on Lanham Act matters gives Tom the unique ability to execute efficient and effective strategies to achieve his clients’ objectives. Practicing for more than 25 years, Tom is an internationally recognized partner in Barack Ferrazzano&...

Marcelo Halpern is a partner with the firm's Business practice and a member of the Technology Transactions & Privacy group. Marcelo's practice focuses on transactional, strategic and corporate representation of global "FORTUNE 100" companies, start-up and emerging growth companies, as well as U.S.-based and international governments and non-profits. His experience includes structuring and negotiating technology and intellectual property-oriented strategic alliances and joint ventures; sof...