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  • Charles E. Weir
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Charles E. Weir

Weir_Charles_New-Bio-Template-730-x-730

Partner

Litigation
Contact
  • cweir@manatt.com
  • Phone: 310.312.4280
  • Download vCard
  • Los Angeles
Bar Admissions
  • California

Education
  • Harvard Law School, J.D., 2000

    University of California, Riverside, B.A., magna cum laude, 1996

Services
  • Health Care Litigation
  • Litigation
  • Technology and Intellectual Property Litigation
  • Trademark and Copyright Litigation
Industries
  • Manatt Health

Show Full Bio

  • Profile
  • Experience
  • Honors & Awards
  • Memberships
  • Publications
Profile

Profile

Based in the firm’s Los Angeles office, Charles Weir is a prominent litigator with more than two decades of experience representing public and private companies and executives in a broad range of complex business litigation and internal investigations. He is the business unit leader for the Litigation Resources Team.

Charles has particularly deep experience in the health care space representing major health care providers in complex matters ranging from qui tam claims to suits brought under the federal False Claims Act, the California False Claims Act and Section 1871 of the California Insurance Code as well as in class actions and commercial contract disputes.

He is also an experienced trademark and unfair business practices litigator with experience across multiple industries, including in entertainment, financial services, health care, energy and consumer products.

In addition, Charles has significant experience guiding organizations through internal investigations and responding to government subpoenas and information demands.

Prior to joining Manatt, Charles served as the head of the Los Angeles litigation group and co-chair of the class action team at an international law firm. He has been defense counsel in two of the largest shareholder derivative lawsuits in California’s history, and has defended clients in class action matters relating to breaches of fiduciary duty, false advertising, violations of the Telephone Consumer Protection Act (TCPA), unfair business practices, and violations of both federal and state securities laws.

Experience

Experience

A sampling of Charles’ matters are included in the lists that follow.

Health Care:

Currently representing and previously represented Universal Health Services, Inc., in multiple qui tam suits including alleged violations of the federal and California False Claims Acts, including in the landmark False Claims Act case Universal Health Services, Inc. v. United States, ex rel. Escobar, 136 S.Ct. 1989 (2016).

Represented a major drug manufacturer in a consumer class action regarding the alleged off-label marketing of prescription drugs.

Currently representing and previously represented Canopy Health, a health network in California’s Bay Area, in breach of contract litigation.

Representing a hospital system in a class action alleging improper billing of third-party liability carriers.

Represented a hospital and its parent Fortune 500 health services company in a class action regarding alleged violations of the TCPA.

Represented St. Joseph Health in a commercial dispute with an independent physician association.

Represented a major dialysis company in In re Epogen Off-Label Marketing, a class action dismissed by the U.S. District Court, Central District of California (discussed in the Big Suits Section of The American Lawyer following dismissal of the claims against the firm’s client).

Represented a hospital system in a False Claims Act qui tam suit related to radiation oncology.

Representing the Healthcare Financial Management Association as amicus curiae challenging the U.S. Department of Health & Human Services’ hospital price disclosure rule.

Represented multiple Medicare Advantage Plans in an administrative challenge to changes to the Star Ratings system.

Representing a device manufacturer in connection with breach of contract and fraud litigation.

Trademark and Unfair Competition:

Representing the parent company of a film production and distribution company in a trademark infringement lawsuit. Manatt obtained a preliminary injunction against the defendant.

Representing the corporate entities that hold the intellectual property rights of a legendary guitarist in numerous matters related to serial infringers of copyrights and trademarks.

Representing a legendary singer and musician in trademark and copyright infringement litigation.

Represented a cosmetics company in breach of contract and trademark infringement arbitration.

Represented a hospital system in connection with claims of trade secret theft and breach of contract.

Represented a dialysis provider in connection with competition disputes involving allegations of misappropriation of trade secrets, breach of contract and unfair competition.

Representing a national primary care provider in a dispute with a competitor involving allegations of misappropriation of trade secrets and violation of noncompetition and nonsolicitation arrangements.

Represented an artisanal coffee company in trademark litigation.  

Commercial Litigation:

Represented officers and directors of Pacific Gas & Electric Company in a shareholder derivative action arising from the San Bruno accident and the company’s natural gas pipeline operations.

Represented a co-founder of a major semiconductor company in a high-profile securities class action and shareholder derivative suit regarding the company’s stock option accounting practices.

Represented Mars, Incorporated, in multiple consumer class actions regarding product labeling and supply chain disclosures.

Represented members of the board of directors of a publicly traded bank holding company in a securities class action and an Employee Retirement Income Security Act (ERISA) class action.

Represented a subprime lender in a securities class action.

Represented Under Armour in a consumer class action.

Honors & Awards

Honors & Awards

The Best Lawyers in America, 2021–24

The Legal 500 US, 2019

Benchmark Litigation, Future Star, 2012–18

Los Angeles Magazine, Law & Politics Rising Star, 2006–15

Memberships

Memberships

Admitted to practice in the state of California

Publications

Publications

Co-author, “Health Litigation Trends To Watch Now And After COVID-19,” Law360, June 5, 2020.

Charles in the News

  • 08.17.23

    82 Manatt Attorneys Named to 2024 Best Lawyers Guide

    Eighty-two Manatt attorneys have been named to the 2024 edition of Best Lawyers in America, which recognizes the nation’s leading lawyers eac...

  • 08.18.22

    86 Manatt Attorneys Named to 2023 Best Lawyers Guide

    Eighty-six Manatt attorneys have been named to the 2023 edition of Best Lawyers in America, which recognizes the nation’s leading lawyers each ...

  • 08.19.21

    77 Manatt Attorneys Named in Best Lawyers 2022 Guide

    Seventy-seven Manatt attorneys have been named to the 2022 edition of Best Lawyers in America, which recognizes the nation’s leading lawyers ...

  • 05.11.21

    Manatt Strengthens Health Care Legal, Regulatory and Policy ...

    Manatt, Phelps & Phillips, LLP, today welcomed Michael A. Paulsen to its health care group in Albany. Joining as counsel, Paulsen is an ...

Show More

Charles's Articles

  • 06.05.20

    Health Litigation Trends to Watch Now and After COVID-19

    Healthcare litigation partners Joseph Laska and Charles Weir, and associate Ji Won Kim coauthored an article for Law360 discussing healthcare ...



Charles's Newsletters

  • 07.15.20

    Healthcare Litigation Trends to Watch in 2020…and Beyond

    In the immediate term, we face the realities of working and litigating remotely. Courts are estimated to be working at about 25% of their capacity ...



Charles's Events and Webinars

  • 12.10.20

    2021 Litigation Landscape: Key Trends to Watch After a Year of ...

    Nine months after the emergence of the COVID-19 pandemic in the United States, how has the litigation landscape been transformed? Join Manatt for a ...



  • 04.30.20

    Healthcare Litigation Trends to Watch in 2020…and Beyond

    How is today’s volatile healthcare environment impacting litigation—and how can you protect your organization? Learn the answer at a new ...

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