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Mitchell J. Weinstein


Mitch’s passion is helping clients carve out and protect niches for their innovations moving to market. Through strategic planning in patents, trademarks and trade secrets, Mitch partners with clients to identify and work around potential barriers to market entry and to secure protection for their intellectual property assets.

As a partner in the firm’s Intellectual Property Group, Mitch prepares and prosecutes U.S. and foreign patent and trademark applications, with a focus on achieving his clients’ goals.  He has extensive experience in patentability and infringement analyses and opinions, patent and trademark licensing, and client counseling relating to retaining and transferring intellectual property rights. Mitch has extensive experience in international patent strategies, filings and prosecution. He has assisted clients in introducing new products and services to their respective marketplaces in the U.S. and abroad through strategic counseling, state-of-the-art searching, design around strategies and opinions. Recently, he assisted clients in carrying out worldwide patent programs spanning the Americas, Europe and Asia.

Mitch’s technical acumen spans a wide variety of industries, including industrial and food packaging including packaging system and processes, paper and polymer-based materials and closures. He also works with clients in construction materials including heavy equipment, tools, consumables, chemicals, and cable and wire systems, electrical, mechanical and electro-mechanical printing and marking systems, protective and lighting systems, adhesive application systems, molding systems, industrial chemical compositions including adhesives, lubricants and masking agents, chemical process systems, medical products and devices, textiles, automotive products, sporting goods, entertainment and novelty devices, piping and structural attachments, and radioactive and other chemical processes.

Prior to his legal career, Mitch was a licensed professional engineer and an engineering manager with a large, multinational engineering consulting firm specializing in piping system flow analyses, piping system failure prediction, and radioactive waste processing and disposal.

Mitch has been quoted on various Intellectual Property Issues in numerous publications such as: IP Law 360, Bloomberg News, and The Deal.  Mitch often speaks on new and relevant IP topics at industry and legal conferences. Mitch is a member of numerous international, national and local IP organizations and is an active member in areas including patents, designs and law school outreach.

In 2014 Mitch received AIPLA’s Mentor of the Year award and continues to mentor young lawyers and law students to provide them with an understanding of expectations as IP practitioners.  Mitch was a member of the 1992 Giles Rich National Moot Court Championship team.

In 1994, Mitch was admitted to practice before the U.S. Patent and Trademark office. Mitch continues to mentor law students to provide them with an understanding of expectations as IP practitioners.

Mitchell Weinstein Headshot

Additional Information

Education & Admissions

  • State University of New York at Buffalo, B.S., Chemical Engineering
  • John Marshall Law School, J.D., with honors
Bar Admissions
  • Illinois
Court Admissions
  • U.S. District Court, Northern District of Illinois
  • U.S. Court of Appeals, Seventh Circuit


  • American Bar Association
  • American Intellectual Property Law Association
  • Green City Market, Chair of Board of Directors
  • Intellectual Property Law Association of Chicago
  • Member of the 2010 IP Law360 Advisory Board


  • Member of the 1992 Giles Rich National Moot Court Championship team, John Marshall Law School
  • Leading Lawyer, Leading Lawyers Network


  • If you weren’t an attorney, what would you be?
    If I was not an attorney, I might still be an engineer, but more likely, I would be making furniture. I enjoy working with my hands and have always had a fascination with furniture making. I find a lot of satisfaction in creating things and furniture making takes a lot of skill, creativity and focus.

  • What are the top three attributes of your best clients?
    Integrity, creativity, and vision.

  • What’s your favorite book?
    Without a doubt, it is “The Pillars of the Earth” by Ken Follett. I have never read a book that is so engrossing and captivating (nor one that kept me up reading so many nights). The character development is absolutely phenomenal and the storylines, plots and subplots all flow together so well. It is a book that I have reread a number of times and have found it better each time.

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