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Allison Reimann

Allison W. Reimann

  • Biography
  • Representative Experience
  • Admissions, Activities & Honors
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Allison Reimann

Allison is co-chair of Godfrey & Kahn’s firm-wide antitrust practice, where she practices in the areas of litigation, corporate counseling and mergers and acquisitions. She also is a member of the firm’s Litigation Practice Group; Government Investigations, White Collar & Compliance Practice Group; and Healthcare Practice Group.

A substantial portion of Allison’s practice is in the area of antitrust litigation. Allison’s antitrust litigation experience includes individual and class actions brought under federal and state antitrust laws involving claims including territorial allocation, exclusive dealing, monopoly leveraging, tying, refusals to deal, covenants not to compete and alleged “sham” government petitioning.

Allison’s antitrust practice also includes counseling and training clients on a variety of antitrust issues including price fixing and other criminal conduct; pricing and distribution issues, such as minimum advertised price policies, resale price maintenance, and the Robinson-Patman Act; and joint ventures and other competitor collaborations. She also has written and presented extensively on labor market antitrust issues, including wage-fixing and “no poach” agreements. Allison also frequently advises clients on antitrust issues in mergers and acquisitions including information sharing, antitrust risk evaluation, and pre-merger antitrust investigations, including second requests under the Hart-Scott-Rodino Act.

Allison also represents clients in a range of litigation matters in trial and appellate courts around the country, including contract disputes, business torts, deceptive trade practices, and trademarks. She also has particular experience representing healthcare clients in civil litigation, including healthcare antitrust litigation, complex commercial litigation, and the False Claims Act.

Allison’s practice also includes internal investigations and government investigations, particularly in the areas of antitrust and healthcare. She also frequently assists other law firms as co-counsel and local counsel in Wisconsin courts.

Allison has been named a Best Lawyers One to Watch for antitrust as well as a “Leader in the Law” by the Wisconsin Law Journal. She also currently co-chairs the ABA Litigation Section’s Antitrust Litigation committee. Allison maintains an active pro bono practice and frequently speaks on issues relating to diversity, equity and inclusion.

Prior to joining Godfrey & Kahn, Allison practiced litigation at Sidley Austin LLP in Chicago. She also was a law clerk for the Honorable William C. Canby, Jr. of the Ninth Circuit Court of Appeals.

Representative Experience


Counsel for health insurer in a monopolization action against a dominant competitor based on the use of most favored nations clauses in payer agreements 

Defense of dental insurer in antitrust class action challenging territorial restrictions in trademark licensing agreements

Defense of clinical laboratory in several antitrust cases based on alleged exclusionary practices, resulting in several successful motions to dismiss that were upheld on appeal

Defense of clothing retailer in monopolization action in which the federal district court struck the plaintiff’s economic expert testimony, followed by an order entering summary judgment in client’s favor

White Collar and Government Investigations 

Counsel for a clinical laboratory in False Claims Act matter challenging client’s Medicaid billing practices, resulting in summary judgment in client’s favor

Defense of health care providers and systems in federal investigations involving alleged violations of the False Claims Act and fraud against Medicare, Medicaid, and Tricare programs

Separate counsel for former employees of OEM automotive manufacturer in civil lawsuits and criminal investigation 

Other Litigation 

Defense of pharmaceutical wholesaler in multi-million dollar contractual dispute involving payment of drug rebates

Defense of hospital and health system in employment action by former nurse alleging retaliatory discharge

Defense of residential property company in deceptive trade practices action brought by the Wisconsin Department of Justice and individual consumers

Admitted To Practice



Court Admissions

United States Court of Appeals, Ninth Circuit
United States Court of Appeals, Second Circuit
United States District Court, Northern District of Illinois
United States District Court, Central District of Illinois
United States District Court, Eastern District of Michigan
United States District Court, Eastern District of Wisconsin
United States District Court, Western District of Wisconsin

Professional Associations

American Bar Association Antitrust Law Section
American Health Lawyers Association
Seventh Circuit Bar Association
Western District of Wisconsin Bar Association


Foundation for Madison’s Public Schools – Board Member

Seventh Circuit Bar Association Diversity & Inclusion Committee


Honored as a 2020 "Leader in the Law" by the Wisconsin Law Journal

Recognized by Best Lawyers “Ones to Watch” (Antitrust Law, 2021)



Juris Doctor, University of Pennsylvania Law School, magna cum laude, Order of the Coif, 2009

Bachelor of Arts, Kalamazoo College, magna cum laude, 2000

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