No Fees Unless We Win
(310) 207-3233
Menu

Referring Counsel

Refer Your Mass Tort Cases to Wisner Baum

When you refer a mass tort case to Wisner Baum, you're partnering with seasoned trial lawyers who have faced down some of the world's largest corporations—and won.

A lot of mass tort law firms think in terms of case volume and settlements. Wisner Baum is different. 

Our attorneys only take on litigations that we are prepared to lead. That means handling all aspects of the case through trial. Our knowledge, experience, and trial success has made us the law firm that other firms rely on to get results. 

Why Attorneys Refer Cases to Wisner Baum

We Don't Just Sign Cases—We Actually Try Them

In an era when most firms have never seen the inside of a courtroom in a mass tort, Wisner Baum has secured historic jury verdicts in high-stakes litigation:

  • Johnson v. Monsanto (2018): $289 million verdict—the first Roundup trial in the nation. Wisner Baum managing partner R. Brent Wisner was co-lead trial counsel. Attorneys Michael L. Baum and Pedram Esfandiary were on the trial team.
  • Hardeman v. Monsanto (2019): $80 million federal court verdict. R. Brent Wisner, Michael L. Baum and Pedram Esfandiary were on the trial team.
  • Pilliod v. Monsanto (2019): $2.055 billion verdict—one of the largest product liability verdicts in U.S. history. Wisner Baum managing partner R. Brent Wisner was co-lead trial counsel. Attorneys Michael L. Baum and Pedram Esfandiary were on the trial team.

These weren't settlements negotiated in a conference room. They were verdicts won in front of juries against a corporation with seemingly unlimited resources and top-notch defense counsel. Our success at trial has translated directly into success in settlement. 

In 2020, our firm helped negotiate Roundup settlements worth over $10 billion. 

Decades of Mass Tort Experience

Mass tort litigation lives or dies on the science. Our attorneys don't just hire any experts—we hire the best and brightest in their respective fields. Our attorneys have spent decades building relationships with leading scientists, physicians, and academic researchers who serve as experts in our cases. When your client's case requires credible expert testimony, we have the experts and know-how necessary to support it.

Our attorneys understand the medicine, toxicology, and epidemiology. Decades of experience in pharmaceutical litigation (Paxil, Risperdal, Zyprexa, Zantac), toxic exposure cases (Roundup, toxic baby food, paraquat), and product liability (medical devices, and defective consumer products) have made this depth of knowledge second nature to our legal team.

Resources to Match Any Defendant

Mass tort cases against Fortune 500 companies require substantial investment in discovery, expert retention, and trial preparation. Wisner Baum has the resources and staffing to go the distance—whether that means funding years of litigation or staffing trial that last many weeks. Our Los Angeles, San Francisco Bay Area, and Washington D.C. offices give us a national footprint to handle any major litigation nationwide.

Understanding the Referral Relationship

When you refer a client to Wisner Baum, your name will always be attached to their experience and case outcome. We treat every referred case with the understanding that two reputations are under the microscope: ours and yours. That means responsive communication, transparent case updates, and the highest level of attention and dedication that every client deserves.

Cases We Handle

Wisner Baum focuses exclusively on mass tort, class action, and complex product liability litigation. Our current active litigations include:

If you have a potential mass tort or class action case that you are looking to refer, Wisner Baum is here to help. Please contact us directly at (310) 207-3233 or email [email protected] to discuss with our experienced attorneys.

Get Started
Call (310) 207-3233 or fill out the form below and request a free consultation.
20,000+ Families Represented

"Wisner Baum gave exceptional attention to all aspects of the case, detailed inquiry, and tenacious overview of all the information submitted. The paralegals are efficient and diligent. I was completely surprised to find an empathic personal message to take care of my own health during the challenging time of being a full-time caretaker.*"

Mary Flores
Reviewed
on Google
Read More Reviews
Case Results
We Demand Accountability.
More Successful Results
$2.0 Billion Verdict
Personal Injury
In May of 2019, the jury in the case of Pilliod et al. v, Monsanto Company ordered the agrochemical giant to pay $2.055 billion in damages to the plaintiffs, Alva and Alberta Pilliod, a Bay Area couple in their 70s. R. Brent Wisner served as co-lead trial attorney for the Pilliods, delivering the opening and closing statements and cross-examining several of Monsanto’s experts. Wisner Baum managing shareholder, Michael Baum and attorney Pedram Esfandiary also served on the trial team in the Pilliod case. The judge later reduced their award to $87M. Monsanto appealed the Pilliod’s verdict which the California Court of Appeal for the First Appellate District denied on August 9, 2021. Monsanto then requested the California Supreme Court review the appeal’s court decision, which the court denied on Nov. 17, 2021. Monsanto (Bayer) then submitted a petition for a writ of certiorari with the U.S. Supreme Court which SCOTUS denied on June 27, 2022, allowing the final judgment of $87M to remain intact.
In May of 2019, the jury in the case of Pilliod et al. v, Monsanto Company ordered the agrochemical giant to pay $2.055 billion in damages to the plaintiffs, Alva and Alberta Pilliod, a Bay Area couple in their 70s. R. Brent Wisner served as co-lead trial attorney for the Pilliods, delivering the opening and closing statements and cross-examining several of Monsanto’s experts. Wisner Baum managing shareholder, Michael Baum and attorney Pedram Esfandiary also served on the trial team in the Pilliod case. The judge later reduced their award to $87M. Monsanto appealed the Pilliod’s verdict which the California Court of Appeal for the First Appellate District denied on August 9, 2021. Monsanto then requested the California Supreme Court review the appeal’s court decision, which the court denied on Nov. 17, 2021. Monsanto (Bayer) then submitted a petition for a writ of certiorari with the U.S. Supreme Court which SCOTUS denied on June 27, 2022, allowing the final judgment of $87M to remain intact.
Continue Reading
$2.0 Billion Verdict
Personal Injury

In May of 2019, the jury in the case of Pilliod et al. v, Monsanto Company ordered the agrochemical giant to pay $2.055 billion in damages to the plaintiffs, Alva and Alberta Pilliod, a Bay Area couple in their 70s. R. Brent Wisner served as co-lead trial attorney for the Pilliods, delivering the opening and closing statements and cross-examining several of Monsanto’s experts. Wisner Baum managing shareholder, Michael Baum and attorney Pedram Esfandiary also served on the trial team in the Pilliod case.

The judge later reduced their award to $87M. Monsanto appealed the Pilliod’s verdict which the California Court of Appeal for the First Appellate District denied on August 9, 2021. Monsanto then requested the California Supreme Court review the appeal’s court decision, which the court denied on Nov. 17, 2021. Monsanto (Bayer) then submitted a petition for a writ of certiorari with the U.S. Supreme Court which SCOTUS denied on June 27, 2022, allowing the final judgment of $87M to remain intact.

$289.2 Million Verdict
Personal Injury
$289.2 million jury verdict in Monsanto Roundup trial Wisner Baum co-represented Dewayne “Lee” Johnson in the first Roundup cancer lawsuit to proceed to trial. On Aug. 10, 2018, a San Francisco jury ordered Monsanto to pay $39.25 million in compensatory damages and $250 million in punitive damages to Mr. Johnson, a former groundskeeper who alleged exposure to Monsanto’s herbicides caused him to develop terminal non-Hodgkin lymphoma. Months after the jury verdict, the judge overseeing the trial reduced the punitive damages to $39.25 million. Mr. Johnson decided to accept the remittitur, bringing the adjusted amount awarded to Mr. Johnson $78.5 million. Monsanto (Bayer) appealed the verdict and Johnson cross appealed. On July 20, 2020, the First Circuit Court of Appeals upheld the verdict against Monsanto but reduced Mr. Johnson’s award to $20.5 million. The company chose not to take the case to the U.S. Supreme Court, ending the litigation.
$289.2 million jury verdict in Monsanto Roundup trial Wisner Baum co-represented Dewayne “Lee” Johnson in the first Roundup cancer lawsuit to proceed to trial. On Aug. 10, 2018, a San Francisco jury ordered Monsanto to pay $39.25 million in compensatory damages and $250 million in punitive damages to Mr. Johnson, a former groundskeeper who alleged exposure to Monsanto’s herbicides caused him to develop terminal non-Hodgkin lymphoma. Months after the jury verdict, the judge overseeing the trial reduced the punitive damages to $39.25 million. Mr. Johnson decided to accept the remittitur, bringing the adjusted amount awarded to Mr. Johnson $78.5 million. Monsanto (Bayer) appealed the verdict and Johnson cross appealed. On July 20, 2020, the First Circuit Court of Appeals upheld the verdict against Monsanto but reduced Mr. Johnson’s award to $20.5 million. The company chose not to take the case to the U.S. Supreme Court, ending the litigation.
Continue Reading
$289.2 Million Verdict
Personal Injury

$289.2 million jury verdict in Monsanto Roundup trial

Wisner Baum co-represented Dewayne “Lee” Johnson in the first Roundup cancer lawsuit to proceed to trial. On Aug. 10, 2018, a San Francisco jury ordered Monsanto to pay $39.25 million in compensatory damages and $250 million in punitive damages to Mr. Johnson, a former groundskeeper who alleged exposure to Monsanto’s herbicides caused him to develop terminal non-Hodgkin lymphoma.

Months after the jury verdict, the judge overseeing the trial reduced the punitive damages to $39.25 million. Mr. Johnson decided to accept the remittitur, bringing the adjusted amount awarded to Mr. Johnson $78.5 million.

Monsanto (Bayer) appealed the verdict and Johnson cross appealed. On July 20, 2020, the First Circuit Court of Appeals upheld the verdict against Monsanto but reduced Mr. Johnson’s award to $20.5 million. The company chose not to take the case to the U.S. Supreme Court, ending the litigation.

$265 Million Settlement
Fatal Train Crash
In 2016, Wisner Baum attorney Timothy A. Loranger and six other attorneys in the Plaintiffs’ Management Committee were able to secure a $265 million settlement for victims of the 2015 Amtrak 188 derailment in Philadelphia, one of the largest in the U.S. for 2016.
In 2016, Wisner Baum attorney Timothy A. Loranger and six other attorneys in the Plaintiffs’ Management Committee were able to secure a $265 million settlement for victims of the 2015 Amtrak 188 derailment in Philadelphia, one of the largest in the U.S. for 2016.
Continue Reading
$265 Million Settlement
Fatal Train Crash

In 2016, Wisner Baum attorney Timothy A. Loranger and six other attorneys in the Plaintiffs’ Management Committee were able to secure a $265 million settlement for victims of the 2015 Amtrak 188 derailment in Philadelphia, one of the largest in the U.S. for 2016.

When companies choose profit over people, we fight. Wisner Baum exposes injustice, demands accountability, and delivers real results for real people. Your Path to Justice Starts Here.
Los Angeles
11111 Santa Monica
Blvd Suite 1750
Los Angeles, CA 90025
Get Directions
Bay Area
100 Drakes Landing Road
Suite 160
Greenbrae, CA 94904
Get Directions
Washington, D.C.
2101 L St NW 

Suite 800
Washington, DC 20037
Get Directions
The information on this website is for general information purposes only. Nothing on this site should be taken as advice for any individual case or situation. This information is not intended to create, and receipt or viewing does not constitute a client relationship.
Send Us Your Case Details
We’ll respond and let you know the best way to proceed with your case.
crossarrow-up
linkedin facebook pinterest youtube rss twitter instagram facebook-blank rss-blank linkedin-blank pinterest youtube twitter instagram