Timothy P. " Tim" Callahan

Mark Hagedorn advises on a wide variety of intellectual property matters, including patent, trademark and copyright solicitation and IP litigation, licensing and counseling. Appreciated for his honesty and practical legal advice, Mark consistently delivers utilitarian solutions that help his clients resolve disputes and litigation efficiently and economically. Mark offers broad experience in virtually all phases of IP counseling and litigation. He understands and has represented clients invol...

Bradley M. Cosgrove is a Chicago medical malpractice attorney, personal injury attorney, and partner at Clifford Law Offices. He is an experienced trial attorney in the areas of medical malpractice, trucking accidents, automobile collisions, personal injury, and wrongful death who believes that results speak for themselves. As a young Chicago personal injury attorney, Brad began his career as a trial lawyer. As a matter of fact, he undertook his first jury trial just one day after he received...

Laura Keidan Martin counsels health care providers on their most challenging transactions and compliance issues. As co-chair of Katten's national Health Care practice, she represents hospitals and health systems, ancillary services and post-acute care providers, physician groups and life sciences companies. Ultimately, Laura's work on both transactional and compliance matters paves the way for health care providers to successfully navigate risks while achieving business objectives. Toward tha...

Neal is a distinguished attorney with a practice in insurance coverage and reinsurance, boasting an impressive career spanning more than 40 years. His experience includes representing national and international insurance clients in intricate coverage disputes across various lines, including commercial business, property and casualty, accident & health, fidelity, and more. Through a blend of innovative thinking and extensive experience, Neal collaborates closely with his clients to devise ...

Eric Singer concentrates his practice in construction law, representing design professionals, contractors, owners, developers, lenders, title insurers and other parties in all aspects of design and construction, including negotiation and drafting agreements for a variety of services and delivery systems; perfection, enforcement and defense of mechanics liens and bond claims; construction insurance counseling; copyrights for architectural works; mediation, arbitration, litigation and other dis...

Peter S. Coorlas is a senior associate of the Chicago law firm Peck Ritchey, LLC . Peter was an Assistant State’s Attorney for Cook County for 30 years, serving in the Special Litigation and Municipal Litigation Sections of the Civil Actions Bureau. Although Peter served in various areas while at the State’s Attorneys Office, he has primarily represented the interests of Cook County in probate matters, spending much of his time on contested litigation, including will contests, con...

Lawrence B, Swibel is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. Lawrence B,, 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 Lawrence B, is held by other top lawyers in the same geographic and legal practice area.

Colin Dunn is a highly successful premise liability lawyer, aviation accident attorney, and partner at Clifford Law Offices. He obtained his law degree from Loyola University School of Law in Chicago, graduating magna cum laude. Mr. Dunn was eighth in his class of 169, and served on the Law Journal. During law school, he worked for the Honorable Justice Ann Williams of the Seventh Circuit Court of Appeals as well as for the Honorable Judge Ronald Guzman of the United States District Court for...

Partner James M. Quigley is widely regarded as a highly-esteemed and experienced Illinois Divorce/Family Law attorney and litigator. Mr. Quigley has successfully tried complex financial, custody, removal and other contested cases in Cook, Lake, DuPage, and other counties throughout the state of Illinois, since 1992. Quigley attended and graduated from the University of Wisconsin–Madison, obtaining a Bachelor of Arts degree in Journalism in 1989. James originally hoped to combine his lov...

Allan Muchin co-founded the law firm that bears his name. What began in 1974 as the 24-attorney firm Katten Muchin Zavis has today become Katten Muchin Rosenman LLP, with more than 600 attorneys worldwide. Allan began his legal career as a trial attorney for the Internal Revenue Service. When he helped launch Katten Muchin Zavis, he and his partners set out to create a law firm that was innovative, specialized and entrepreneurial. His practice concentrated on advising corporations, partnershi...