No win. No fee.


Katherine E. Mayo

				Katherine E. Mayo

Katherine has recovered millions of dollars for her clients. Her unwavering determination to secure the maximum recovery possible combined with her analytical acumen, strong communication skills, and genuine compassion for her clients make Katherine a powerful and trusted advocate. She was recognized as a Super Lawyers Rising Star for 2017 and 2018, an honor awarded to no more than 2.5 percent of lawyers in New York State.

Prior to her work at Chaffin Luhana, Katherine litigated product liability and environmental matters on behalf of individuals, landowners, water districts, and municipalities at another New York plaintiffs’ firm. Katherine led and second-chaired matters involving water contamination and air pollution resulting from manufacturing and agricultural activities, natural gas drilling, the disposal of radioactive waste, and institutional air conditioning systems. She independently managed product liability cases involving hundreds of plaintiffs from inception through settlement and to trial.

In her free time, Katherine enjoys running and cycling, reading fiction and nonfiction, and indulging in the new golden era of television.

Additional Plaintiff Successes

  • Secured a $500,000 settlement for a landowner injured by the contamination of his drinking water with industrial pollutants
  • Recovered $435,000 for a woman wounded by a defective medical device
  • Obtained a $298,530 settlement for a man harmed by a dangerous diabetes drug
  • Drafted a high-stakes motion that allowed a mother and the estate of her deceased child to recover $1,500,000 after years of bullying led to the boy’s tragic death
  • Co-counsel in a medical malpractice trial that resulted in a $4,500,000 settlement for the plaintiff who was misdiagnosed with hemophilia and treated with unnecessary blood transfusions that infected her with HIV and hepatitis C

Practice Areas

  • Pharmaceutical and Medical Device Mass Torts & Class Actions
  • Environmental Matters
  • Product Liability
  • Workplace Injury


  • Brooklyn Law School, J.D.; Moot Court Honor Society, Appellate Advocacy Division; CALI award for excellence in Energy Law, Policy & Regulation; Energy Committee of the New York City Bar Association, student member
  • University of Wisconsin at Madison, M.F.S.; Thesis: The Role of Contemporary French Corporations in Achieving Sustainable Development
  • Smith College, B.A., cum laude; Phi Beta Kappa; Certificate of Study Abroad: University of the Sorbonne V


  • Sabella v. Appalachian Development Corp.: The Importance of Being Diligent (In Conducting Title Searches), in The Law of Oil and Gas in Pennsylvania: 2015 Case Supplement 3-5 (PBI Press 2015).

Memberships and Affiliations

  • American Association for Justice
  • New York State Trial Lawyers Association

Bar Admissions

  • New York
  • New Jersey
  • S.D. New York
  • E.D. New York
  • District of New Jersey

how not to be a lawyer

according to eric t. chaffin

“My father was a union witness at an arbitration in a steel mill outside of Pittsburgh. After the hearing, my father, dressed in blue jeans and a sweatshirt, stuck out his hand to shake hands with the company’s lawyer. The lawyer refused. The lawyer was not upset because my dad got the best of him but because he frowned upon working class people. I was the first person in my family to graduate from college. My dad used this story to remind me to respect others, to remember where I came from and as an example of how not to conduct myself as a lawyer.”

eric t. chaffin

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