Mariah F. DiGrino

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...

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&...

Peter M. Siavelis is a lawyer recognized by Best Lawyers in the practice area of Patent Law. Peter M. practices law in Chicago, Illinois Best Lawyers has recognized Peter M. Siavelis since 2026. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Peter M. Siavelis is held by other lawyers.

Kevin, chair of the firm’s Intellectual Property practice, represents life sciences clients across every facet of patent law. Clients rely on Kevin to navigate the complexities of intellectual property with confidence and clarity. His practice consists of conducting technical IP due diligence for mergers and acquisitions, as well as collaboration and license agreements; comprehensive patent counseling, including global prosecution and strategic portfolio management; and product clearanc...

Patricia Brown Holmes is a highly respected and accomplished lawyer who focuses her practice on high-stakes, “bet-the-company” commercial disputes and litigation; class actions; investigations and white collar criminal defense; environmental, social, and governance issues (ESG) such as diversity audits; and risk, reputation, and crisis management counseling for her wide range of public and private corporate clients. She is the first Black woman to lead and have her name on the doo...

Michael Melzer is a lawyer recognized by Best Lawyers in the practice area of Public Finance Law. Michael practices law in Chicago, Illinois Best Lawyers has recognized Michael Melzer since 2027. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Michael Melzer is held by other lawyers.

Norma Manjarrez is a lawyer recognized by Best Lawyers in the practice area of Employment Law - Management. Norma practices law in Chicago, Illinois Best Lawyers has recognized Norma Manjarrez since 2024. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Norma Manjarrez is held by other lawyers.

Lori Shannon is a lawyer recognized by Best Lawyers in the practice area of Employee Benefits (ERISA) Law. Lori practices law in Chicago, Illinois Best Lawyers has recognized Lori Shannon since 2024. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Lori Shannon is held by other lawyers.

As a sought-after transactional and regulatory advisor, Patrick J. Martinez has built his practice on executing complex healthcare acquisitions and joint ventures. He represents private equity firms and their platform companies in the acquisition and divestiture of for-profit healthcare companies, as well as provider-to-provider deals. Read full biography: https://www.mwe.com/people/patrick-j-martinez/

Norma Zeitler serves as outside labor and employment and litigation counsel to nonprofit, healthcare, hospitality and manufacturing clients. Norma is totally committed to helping each client focus on its mission and mitigate the potential for a dispute through proactive counseling and development of sound policies, practices and procedures. Norma represents employers in the defense of employment discrimination, retaliatory discharge, breach-of-contract, workplace torts and restrictive covenan...