With extensive experience in litigation in the state and federal courts, Mayer Brown‘s activity spans from emerging torts to greenhouse-gas emissions and site-based mass tort claims to PFAS litigation. The practice is spearheaded by Chicago-based Mark Ter Molen and Tim Bishop. Molen takes the point in federal and state trials and appeals on environmental tort cases, and Bishop has long-standing experience in environmental and land use litigation, covering matters under the Clean Water Act, Endangered Species Act, and Clean Air Act. Splitting her time between Palo Alto and San Francisco, Davina Pujari lends her experience as an EPA enforcement attorney to clients on environmental criminal defense, toxic torts, and crisis response. New York’s Avi Kupfer represents businesses and trade groups in challenging and defending federal regulations.
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Key clients
- Veolia S.A. and its US subsidiary
- National Pork Producers Council
- American Farm Bureau Federation
- Joseph T. Ryerson & Son, Inc.
- US Sugar Corporation
- Charter Communications
- National Stone, Sand & Gravel Association
- National Mining Association
- National Home Builders Association
- National Cattlemen’s Beef Association
- Tetra Tech EC, Inc.; Tetra Tech, Inc.
- Avient Corporation
Work highlights
Represent Veolia S.A. and its US subsidiary, Veolia North America (VNA) in the US in connection with the Flint Water Crisis.
Represent Joseph T. Ryerson and Son Inc., in connection with its status as a Potentially Responsible Party at the Portland Harbor Superfund Site. As of Oct 2025, the involved parties continue to negotiate with EPA to develop a detailed cleanup plan.
Secured a highly favorable settlement for Charter Communications in cases alleging Spectrum’s involvement in the Lahaina, HI fires due to cable lines attached to Hawaiian Electric’s poles.
Lawyers
Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.
Practice head
Mark Ter Molen; Tim Bishop
Other key lawyers
Davina Pujari; Avi Kupfer