Justin Weiner focuses his practice on complex business litigation, including work as National Discovery Counsel in product liability and class action cases. He also has an extensive background in litigation regarding intellectual property. Justin has experience earning favorable results for his clients in state and federal courts in motion practice, on appeals, and in trials. Justin graduated from The University of Chicago, The Law School, with honors, in 2007.

A global financial institution pursuing multiple RMBS “putback” suits against mortgage originators and other responsible parties in state and federal courts
A major medical device company in patent litigation both in the district court and in the United States Court of Appeals for the Federal Circuit
A taxi company as lead counsel in adversary proceeding in Northern District of Illinois Bankruptcy Court
A major media company in litigation over a $1.8 billion debt refinancing
A national moving company in class actions brought by a former employee
An amicus brief in the landmark patent case Oil States Energy Services, LLC v. Greene’s Energy Group, LLC in the Supreme Court of the United States
A wireless telecommunications company in patent litigation in the United States District Court for the Northern District of Illinois
A major auto manufacturer in a products liability case in the Illinois Supreme Court
A leading engineering firm in trade secret and unfair competition litigation in New York State Supreme Court
A wireless telecommunications company in a breach of contract claim in the United States District Court for the Western District of Missouri
A patent infringement suit relating to mobile real-time data technology in the United States District Court for the District of Delaware and the Patent Trial and Appeal Board
A natural gas company as defendant in patent infringement case
A garment manufacturing company as petitioner in an ITC action
A seller of vaping products as respondent in an ITC action
Secured acquittal for pro bono client in two-day bench trial for Class X felony in Cook County Criminal Court
Secured a defense verdict in consumer-leasing action following a jury trial in Cuyahoga County, Ohio for a major automotive manufacturer on one claim for fraud and another for a violation of the Consumer Leasing Act.

Before joining BSP Law, Justin served as Partner at MoloLamken LLP. He litigated a wide range of commercial cases, managed all aspects of fact and expert discovery, and has extensive courtroom experience. Before MoloLamken, Justin was an Intellectual Property Litigation Associate for Sidley Austin LLP. Justin gained experience within the court system by serving as a Law Clerk for Chief Judge Frank H. Easterbrook of the U.S. Court of Appeals for the Seventh Circuit and Judge Milton I. Shadur of the U.S. District Court for the Northern District of Illinois.

Justin is a graduate of the University of Michigan, where he earned his Bachelor of Science in Biology and Economics, with high distinction. He went on to the University of Chicago, The Law School to earn his J.D., with honors.

Honors & Awards

DBusiness Top Lawyers (2025)

Michigan Lawyers Weekly, Leaders in the Law (2024)

Benchmark Litigation, 40 & Under Hot List (2018)

Chicago Law Bulletin, 40 Under 40 (2016)

Benchmark Litigation, Rising Stars Under 40 (2016)

Order of the Coif

Michigan Super Lawyers (2023 – present)

Professional Activities

Leading Lawyers, Member, 2017-present

Product Liability Advisory Council, Member

Seventh Circuit Bar Association, Circuit Rider Committee, Illinois Co-Chair and Young Lawyers’ Committee, Member

State Bar Association of Michigan United States Courts Committee, Member

Presentations

“Whose Surrogate Is It Anyway?” Trial Network Top Gun Litigation: Courtroom Mavericks, Discussion Leader (October 2024)

“Trade Secret Damages: An Old, Unresolved Issue with Potentially Big Consequences,” presented to Trial Network Litigation Sun, Surf, and Strategies (May 2024)

“Am I Certifiable?” State Bar of Michigan, Moderator (May 2021)

Publications

“Whose Data is it Anyway? Defending Client Information After the Case Ends ” DRI For the Defense, co-author (November 2023)

“Sixth Circuit cases in the U.S. Supreme Court: 2021 review and 2022 preview” Michigan Bar Journal (February 2022)

“Franks v. Franks: The Michigan Court of Appeals Writes a Treatise on Shareholder Oppression” Detroit Lawyer Magazine, co-author (January 2020)

“High Court Considers Upending Patent Damages,” Law360 (January 2018)

“‘Patent Dance Ruling Means Sponsors Must Plan Ahead,” Law360 (December 2017)

For Fun:

Favorite Sport: Skiing

Favorite Activity: Cooking

Favorite TV Show: “The Wire”