Senior LeadershipShareholders
John P. Gardella
Shareholder and Chair of Complex Litigation

Overview
John Gardella is a Shareholder and nationally recognized thought leader at CMBG³ Law, licensed to practice in Massachusetts and Tennessee. He chairs the firm’s Emerging Markets Practice which includes PFAS, Environmental, Employment, Commercial Disputes and General Litigation practice areas— areas where legal mastery, scientific depth, and business foresight converge.
Accreditations
Admissions
- Massachusetts
- Tennessee
- United States District Court for the District of Massachusetts
Education
- 2000: Vanderbilt University, magna cum laude, B.A. Economics, minor Japanese
- 2003: Vanderbilt University Law School, J.D. (Associate Editor of the Vanderbilt Transnational Law Journal)
Honors
- 2020-2021: Only attorney in the country named a National Thought Leader on PFAS by the National Law Review
- 2017 - 2021: Selected to Super Lawyers:
- Rated “AV-Preeminent” by Martindale-Hubbell, signifying the highest level of legal knowledge, analytical capabilities, judgment, communication ability
- 2016: including. Only 2.5% of the attorneys in Massachusetts are selected as “Rising Star” Super Lawyers., Named to the “Rising Stars” list in New England Super Lawyers for five years
Speaking Engagements
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2026: 2026 PFAS Conference, ACI (May 20-21, 2026)
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2026: PFAS Litigation and Regulatory Developments Conference, Perrin (May 17, 2026)
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2026: PFAS Webinar, Strafford (April 7, 2026)
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2026: Cosmetics Conference, ACI (March 17, 2026)
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2026: PFAS Conference, Perrin (March 17, 2026)
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2022: “PFAS Science In the Courtroom: Admissibility Issues For Emerging Contaminants”, Judicial Symposium On Scientific Methodology and the Admissibility of Expert Testimony, March
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2022: “The Environmental Justice Movement: Turning Concepts Into Actions”, Antea Group Webinar, February
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2022: “Navigating the Complexities of Today’s M&A Environment”, Smart Business Dealmakers Conference, January
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2022: “PFAS: 2022 and Beyond – Changes Coming and Impacts On Insureds”, Perrin’s Impact of PFAS On Environmental Litigation Conference, January
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2021: “Impact of PFAS On Environmental Litigation”, Perrin’s Environmental Risk & Litigation Conference, October
Published Articles
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Greenwashing Within the Fashion Industry Is the UK’s Next Target
PUBLISHED ARTICLES
The Fashion News January 31, 2022 (quoted)
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Not So Clean? False Advertising Lawsuits Allege PFAS In CoverGirl, BareMinerals Products
PUBLISHED ARTICLES
Informa’s Pharma Intelligence January 21, 2022 (quoted)
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US NGO Sues CoverGirl, Coty Over Sustainability Claims of Alleged PFAS-Containing Product
PUBLISHED ARTICLES
Chemical Watch January 10, 2022 (quoted)
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State Eclipses Feds In Cleaning Forever Chemicals In Soil
PUBLISHED ARTICLES
Bloomberg November 10, 2021 (quoted)
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The Doctor Will See the PFAS Exposed Plaintiff Now
PUBLISHED ARTICLES
Bloomberg October 26, 2021 (quoted)
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PFAS Ruling Against Downstream Users Expected To Shift Plaintiffs’ Focus
PUBLISHED ARTICLES
Inside EPA October 1, 2021 (quoted)
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Changes Coming For PFAS Due Diligence In M&A, Real Estate Deals
PUBLISHED ARTICLES
Bloomberg June 24, 2021
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Vermont Bill Banning PFAS In Consumer Goods Nears Finish Line
PUBLISHED ARTICLES
Bloomberg May 10, 2021 (quoted)
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More Limits Possible On TSCA New Chemicals Review Exemptions For PFAS
PUBLISHED ARTICLES
Chemical Watch May 6, 2021 (quoted)
Representative Cases
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Ryan et al v. Newark, et al (USDC-MA) (PFAS, Environmental, Class Action)
Obtained dismissal for our client on several counts at Motion to Dismiss stage, including dismissal of a novel RICO claim and a 93A claim seeking punitive damages. We further obtained dismissal after oral argument of the client’s related entity on personal jurisdiction grounds. -
EPA v. C.I.L. Industries (federal enforcement action) (Environmental, TSCA)
Successfully negotiated EPA’s penalty demands to well under 50% of the initial demand and was able to do so within a very limited window of time to ensure that the EPA matter was resolved such that the client could carry out a pending sale of the company. -
EPA v. A.B. (federal enforcement action) (Environmental, Lead Paint)
Successfully negotiated a resolution with EPA of our client’s alleged violations of federal lead paint laws on renovation jobsites for approximately 30% of the initial penalty demand for the alleged infractions. Payment was staggered over several years to allow the company to continue its business operations with minimal disruption.
