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Mary Yang
Washington +1 202 662 5932 myang@cov.com Download V-card

Qingliu (Mary) Yang is a litigator in the firm's Washington, DC office, and advises clients on environmental and energy matters. She is a member of the energy industry group and has experience with a range of environmental and energy issues under the Clean Air Act, the Clean Water Act, RCRA, CERCLA, FPA, and EPCA.

Ms. Yang also has a background in trade remedies litigation and trade policy.


  • Represented a solid waste services company in post-remedy selection stage of CERCLA action.
  • Defended a Chinese steel manufacturer in a Section 337 Investigation before the International Trade Commission in connection with trade secret misappropriation and false designation of origin allegations.
  • Defended Samsung in a Section 337 Investigation before the International Trade Commission in connection with patent infringement allegations.


  • Prepared and submitted a comment on EPA and NHTSA's Safer Affordable Fuel Efficient ("SAFE") Proposed Rule on behalf of an electric vehicle manufacturer.
  • Advised energy and healthcare companies on transfers of environmental permits to separate corporate entities.
  • Conducted environmental due diligence for energy and healthcare corporate transactions.
  • Advised motor vehicle manufacturer on responding to an EPA Request for Information under the Clean Air Act.
  • Advised fertilizer company on compliance with federal import licensing and state distributor licensing requirements.
  • Advised automotive parts company on procedures for import of RCRA hazardous wastes.


  • Advised hedge fund on FERC jurisdictional cost recovery arising out of liabilities from the 2018 California wildfires.
  • Advised renewable energy company on risks of affiliate transactions under Texas energy regulations.

Pro Bono

  • Represented seasonal farmworkers in H-2A wage litigation (Peri & Sons Farms v. Acosta, D.D.C. Civ. No. 19-34).
  • Represented a Salvadoran family seeking asylum in removal proceedings.
  • Secured deferral of removal for a South Sudanese national under the Convention Against Torture.
  • Drafted amici curiae brief to the Ninth Circuit Court of Appeals in U.S. v. Peralta-Sanchez (No. 14-50393), regarding the due process right to an attorney in expedited removal proceedings.
  • Advised the American Law Institute regarding treaty interpretation for the Restatement (Fourth) of Foreign Relations Law of the United States.
  • Advised non-State political opposition groups regarding cross-line and cross-border humanitarian aid to the Blue Nile and South Kordofan regions of Sudan.

Memberships and Affiliations

  • Environmental Law Institute

Previous Experience

  • Hon. Judge Mark. A. Barnett, Court of International Trade, Legal Intern (2016)    
  • Hon. Judge Jack B. Weinstein, E.D.N.Y., Legal Extern (2015) 
  • United States Trade Representative, Office of the General Counsel, Legal Intern (2015)