Roundup Attorney in St. Louis, Missouri

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St. Louis Data

Roundup Statistics in St. Louis

117 years (1901-2018)

Monsanto HQ tenure in St. Louis metro

$1.56 billion (2023)

St. Louis Circuit Court Roundup verdict

4,000+

Bayer Crop Science employees in St. Louis metro

3,500+

Missouri Roundup claims filed

Local Courts

Courts in St. Louis, Missouri

St. Louis Circuit Court — 22nd Judicial Circuit

10 N Tucker Blvd, St. Louis, MO 63101

U.S. District Court — Eastern District of Missouri

111 S 10th St, St. Louis, MO 63102

Medical Facilities

Hospitals & Trauma Centers in St. Louis

Siteman Cancer Center — Washington University/BJC

660 S Euclid Ave, St. Louis, MO 63110

Mercy Hospital St. Louis — Cancer Center

615 S New Ballas Rd, St. Louis, MO 63141

Liability Overview

Liability Considerations in St. Louis

St. Louis: Monsanto's Home and the Heart of the Litigation

Monsanto's relationship with St. Louis spans over a century. John Francis Queeny founded the company in 1901 in St. Louis as a chemical manufacturer. The company grew into a global agricultural giant, and its Creve Coeur campus in suburban St. Louis County became the headquarters for glyphosate research, product development, and the regulatory strategy that would eventually be exposed in the Monsanto Papers.

When Bayer acquired Monsanto in 2018, it maintained the Creve Coeur campus as the headquarters of its Crop Science division. This means that key witnesses — scientists, executives, regulatory affairs personnel, and toxicologists who were involved in the decisions documented in the Monsanto Papers — remain in the St. Louis metropolitan area. Corporate records, internal emails, and research files are physically housed in St. Louis-area facilities, making Missouri courts a natural and strategically advantageous venue for Roundup litigation.

The $1.56 Billion St. Louis Verdict

In 2023, a St. Louis Circuit Court jury returned a consolidated verdict of $1.56 billion against Bayer for a group of plaintiffs who developed NHL after decades of Roundup use. The verdict included substantial punitive damages reflecting the jury's conclusion that Monsanto's conduct — suppressing cancer evidence, ghostwriting safety studies, and cultivating regulatory allies — constituted outrageous and malicious behavior. The case is under appeal but demonstrates St. Louis juries' willingness to hold the company accountable on its home turf.

The Team

Your Legal Team

PH

Patricia Hale

Partner

St. Louis, MO

19+ Years Experience
Roundup litigationAgricultural toxic exposureProducts liabilityMissouri mass tort

Patricia Hale has practiced mass tort litigation in St. Louis for 19 years, positioning her at the geographic heart of the Roundup litigation. Her environmental science training and deep familiarity with Monsanto's corporate history give her particular expertise in developing the corporate knowledge and concealment evidence that has driven punitive damage awards. She was part of the trial team in the $1.56 billion St. Louis consolidated verdict and has helped secure over $500 million in Roundup settlements for Missouri clients. Patricia is a frequent commentator on Roundup litigation developments for legal and agricultural media.

Education

  • J.D., Washington University School of Law (2005)
  • B.A., Environmental Science, University of Missouri (2002)