Rebecca E. Cahan

A registered patent attorney with decades of experience, Tom helps domestic and global businesses develop, protect, and manage complex intellectual property portfolios. He has built longstanding client relationships, often spanning 20-30 years, by prioritizing clear communication and ensuring clients feel informed and valued throughout every matter. Tom’s practice has evolved from litigation to a strong emphasis on patent prosecution and trademark protection, reflecting the growing impo...

Jay Augustyn is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. Jay, who practices law in Chicago, Illinois, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jay is held by other top lawyers in the same geographic and legal practice area.

Bob Riley is a trial lawyer. He has tried a broad array of complex, high-stakes cases and has argued appeals in state and federal courts across the country. His practice focuses on product liability, mass torts, and environmental cases; class actions; and general commercial litigation. Bob’s appellate work has given rise to over forty reported decisions concerning trial consolidations, punitive damages, civil conspiracy, class certification, and constitutional interpretation. He litigat...

With more than 30 years of experience, Eric Berg focuses his practice on litigation and transactional construction law. As a litigator, Eric has represented owners, contractors, subcontractors, architects, engineers, and lenders in trials, arbitrations, and mediations. Eric’s transactional work includes drafting and negotiating contracts for the design, construction, rehabilitation and construction management of hotels, hospitals, office buildings, apartment buildings, casinos, transit ...

Jonathan Merel is an experienced attorney and litigator who advocates for his clients in all family law proceedings, including settlement negotiations and trials. Jonathan founded The Law Offices of Jonathan Merel, P.C. in early 2009. Prior to starting the firm, Jonathan worked at another Chicago-based family law practice for many years. Jonathan has grown his firm to include 4 other attorneys, an excellent staff and an additional office location in the suburbs. Jonathan has a great deal of e...

Attorney Helena Trachtenberg is dedicated to working with individuals facing complex family law issues. Her experience in working with couples has offered her valuable perspectives on the different approaches to marital dissolution. Whether a couple is seeking a traditional litigated divorce, mediated or collaborative law approaches to divorce, Helena Trachtenberg has the experience couples seek. Beyond divorce strategies, Helena offers prenuptial agreement services for engaged couples planni...

Barry F. Irwin is a top attorney recognized by Best Lawyers in the practice area(s) of Copyright Law, Litigation - Intellectual Property, Litigation - Patent, Patent Law and Trademark Law. Barry F., who practices law in Chicago, Illinois, has been recognized since 2019. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Barry F. is held by other top lawyers in the same geographic and legal practice area.

Eleni Kouimelis is a top attorney recognized by Best Lawyers in the practice area(s) of Environmental Law and Litigation - Environmental. Eleni, 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 Eleni is held by other top lawyers in the same geographic and legal practice area.

With more than two decades of experience in zoning and land use matters, Chris Leach represents property owners, developers, and business owners in obtaining approvals of planned developments, zoning changes, special uses, variations, subdivisions, vacations, and dedications. Chris also works with clients in real estate, liquor, and business licensing-related matters. Having represented clients before municipal plan commissions, planning departments, zoning board of appeals, zoning committees...

Mr. Kilyk practices exclusively in the field of intellectual property law, especially patent law. Mr. Kilyk specializes in patent post-grant review proceedings, inter partes reexaminations, interferences, and oppositions, as well as legal opinions, prosecution, and litigation matters, with specific concentration in the areas of biotechnology, chemistry, and pharmaceuticals. Recent technologies with which he has been involved include biosimilars, new chemical compounds, nucleic acid sequences,...