John M. D'Arco

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.

John Gatz is a patent attorney who concentrates his practice on patent prosecution, patent counseling and patent litigation. John has extensive experience in the life sciences and manufacturing industries. My focus Patent Prosecution/Counseling I prosecute patents and counsel clients in a number of mechanical- and chemical-related technologies including: biomechanical devices, chemical products and processes, sensor-dispensing instruments, analyte meters, test sensors, non-invasive processes,...

Valerie Montague represents a variety of health care providers, digital health companies, senior living facilities, nonprofit trade associations, life sciences companies and vendors of health care providers. Valerie is a Certified Information Privacy Professional/United States (CIPP/US), the preeminent credential in the field of privacy. What do you focus on? I focus my practice on three main areas. HIPAA/Health Information Privacy and Security I assist health care providers and business asso...

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...

Nick wins cases for clients and helps them favorably resolve disputes, including complex partnership, corporate governance, finance, and deal disputes. As a first-chair trial lawyer who has tried more than 30 jury trials, bench trials, and arbitrations, when a rare business case goes to trial, other law firms and clients ask him to join or lead the trial team. Nick splits his time between Barack Ferrazzano’s Minneapolis and Chicago offices, although he regularly appears in courts across...

Ranked by Chambers USA for both taxation and tax controversy, The Legal 500 , and Best Lawyers in America , David Blum provides transactional, tax planning, and tax litigation counsel to local and multinational businesses throughout the United States. His practice serves a variety of sectors, including telecommunications, automotive retail, equipment leasing, financial services, senior care, logistics, hospitality, and retail, among others. According to a client quoted in Chambers , “Da...

Craig Thorstenson concentrates his practice in the litigation of employment disputes and providing related counseling. Craig Thorstenson concentrates his practice in the litigation of employment disputes and providing related counseling. His experience includes defending numerous WARN Act, FLSA and Title VII class actions, prosecuting and defending actions over restrictive covenants, and handling complex labor arbitrations. He regularly acts as "in-house" employment counsel for several compan...

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...

Sean G. Wieber is a top attorney recognized by Best Lawyers in the practice area(s) of Consumer Protection Law. Sean G., 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 Sean G. is held by other top lawyers in the same geographic and legal practice area.

Monica H. Khetarpal is a principal in the Chicago, Illinois, office of Jackson Lewis P.C. and co-leader of the firm’s Environmental, Social and Governance (ESG) resource group and Higher Education Industry Group. She is an experienced litigator and advisor, providing skilled advocacy and thoughtful advice, training, and strategic planning for her clients. Her litigation experience includes employment, civil rights, and education-related cases, including those involving allegations of di...