Patrick M. Collins

Michael P. Chu focuses his practice on all aspects of patent law, including complex litigation, opinions and prosecution. He serves as the Local IP Litigation Practice Group Leader in McDermott’s Chicago office. Mike is also the Chair of the Firm’s Racial & Ethnic Diversity Committee. Read full biography: https://www.mwe.com/people/chu-michael-p/

Ivan M. Poullaos is a top attorney recognized by Best Lawyers in the practice area(s) of Biotechnology and Life Sciences Practice. Ivan M., 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 Ivan M. is held by other top lawyers in the same geographic and legal practice area.

Lowell D. Yoder focuses his practice on cross-border mergers and acquisitions, global tax planning and international tax controversies, representing high-tech, pharmaceutical, e-commerce, financial, consumer and industrial companies. He advises on tax-efficient structuring of cross-border acquisitions, dispositions, financings, internal reorganizations and joint ventures, as well as tax-beneficial planning for intangible holding companies, global supply chains and multi-jurisdictional service...

Kristen E. Hazel has extensive experience representing clients in US and international aspects of federal tax matters, including international acquisitions and divestitures, international joint ventures, and capital plan design and implementation, including tax planning with respect to intellectual property. Her work includes both inbound and outbound transactions. Read full biography: https://www.mwe.com/people/hazel-kristen-e/

Steven Grimes is a top attorney recognized by Best Lawyers in the practice area(s) of Criminal Defense: White-Collar. Steven, 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 Steven is held by other top lawyers in the same geographic and legal practice area.

Emer Simic is a partner in the Intellectual Property Practice Group and focuses her practice on patent litigation and counseling in the pharmaceutical and biotech space. Emer has substantial experience successfully representing pharmaceutical and biotech companies in Hatch-Waxman and patent infringement disputes before the U.S. District Court and before the Patent Trial and Appeal Board (PTAB). A strategic advisor and compelling advocate, Emer partners with her clients to achieve their goals ...

Peter M. Siavelis is a top attorney recognized by Best Lawyers in the practice area(s) of Patent Law. Peter M., 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 Peter M. is held by other top lawyers in the same geographic and legal practice area.

Jill B. Berkeley formerly chaired the firm’s Insurance Policyholder practice group and remains an active member of the group. She represents policyholders and claimants in insurance coverage disputes involving toxic torts and hazardous wastes, environmental pollution, construction, products liability, intellectual property, first-party property, business interruption and excess liability matters. In addition to her robust litigation practice, Jill provides counsel on clients’ deve...

Rachel B. Cowen focuses her practice in various employment discrimination and wrongful termination cases in federal and state courts. Rachel’s experience includes prosecuting and defending employee mobility and trade secret litigation on an emergency injunctive basis. She also counsels employers facing union organizing activity and picketing, and has successfully tried numerous cases before the National Labor Relations Board. She also handles collective bargaining and labor arbitrations...

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...