Accidents happen—and sometimes, negligence is to blame.
You have the right to retain a lawyer to pursue compensation for your losses when another’s negligence causes “personal injuries.” A personal injury includes the physical injuries and financial losses that are suffered as a result of another person or entity’s intentional wrongdoing, carelessness, or recklessness.
If you sustain injuries in an accident caused by negligence, you deserve the support and advocacy that comes with retaining an award-winning personal injury attorney.
The San Francisco personal injury lawyers at Wisner Baum are nationally acclaimed for earning justice and compensation for clients. Best Lawyers®, Super Lawyers®, The National Trial Lawyers, and Lawdragon, among others, have recognized our lawyers for their skill and expertise handling cases in diverse practice areas.
Since 1985, our legal team has earned billions in compensation for clients throughout the San Francisco Bay Area and across the nation at trial and in settlements.
When it comes to complex injury and mass tort litigation, local knowledge matters. Our attorneys have filed and tried cases in San Francisco Superior Court and the Northern District of California, a major venue for national multidistrict litigation (MDL). We understand California tort law, know the procedures and preferences of local judges, and bring a deep familiarity with how Bay Area juries view corporate accountability and catastrophic harm.
Our San Francisco office gives you easy access to our legal team, while our nationwide resources allow us to advocate for you in MDL proceedings and consolidated litigation across the country.
While we help clients with serious single-event injury claims, our firm is increasingly recognized for handling high-impact mass tort cases—including product liability, dangerous drugs, defective medical devices, toxic exposure, environmental disasters, and class actions—on behalf of individuals and families harmed in the Bay Area and beyond.
We routinely represent clients in cases involving:
If you’re searching for class action attorneys in San Francisco, or if you need a proven San Francisco personal injury law firm to handle your mass tort or complex injury claim, you’ve found a team you can trust.
If you were harmed by a dangerous product or widespread corporate wrongdoing, your claim may be part of a mass tort or consolidated MDL action, often coordinated right here in the Northern District of California.
Here’s how the process typically works:
If you or a loved one suffered injury in San Francisco or anywhere in the Bay Area, taking the following steps can protect your health and strengthen your claim:
This court handles the vast majority of civil injury and tort lawsuits filed locally, including mass tort cases that are coordinated or consolidated here. It has departments specialized in complex civil litigation and asbestos cases, which are common types of mass torts. Knowing this court's procedures and local rules is crucial, as it shapes how cases move through trial, motions, settlement discussions, and alternative dispute resolution options.
NDCA is a key federal venue for product liability class actions and multidistrict litigation (MDL), with many mass tort cases centralized here. This includes large national and regional cases involving dangerous drugs, medical devices, and consumer products. The court’s case management practices promote efficiency in complex litigation, benefiting San Francisco residents' claims.
This governs important rules such as statutes of limitations, procedural deadlines, and filing requirements for both state personal injury and mass tort lawsuits in California. Understanding these rules ensures claimants file timely, valid claims and uphold their legal rights.
Both Zuckerberg San Francisco General Hospital and UCSF Medical Center treat many serious injury victims locally. Their documentation and records serve as important evidence in supporting personal injury and mass tort claims, by establishing the extent and cause of the injuries.
This office assists consumers in reporting product defects, scams, or unsafe practices. It complements legal claims by providing additional advocacy and resources to protect consumers and help vindicate claims related to defective or dangerous products.
Together, these resources give injured San Francisco and Bay Area residents concrete legal and medical foundations to build successful personal injury and mass tort cases, support local litigation strategies, and access the protections of relevant law and court systems.
At Wisner Baum, we represent claimants in personal injury lawsuits involving the following types of accidents and incidents:
To succeed in a mass tort or personal injury claim in San Francisco, the plaintiff must establish the extent of their injuries and damages, identify the cause of harm, and prove fault by the negligent party or parties.
Mass tort litigation often involves many plaintiffs with related claims consolidated in San Francisco Superior Court or the Northern District of California. Each plaintiff’s case is evaluated individually even within the larger coordinated litigation.
Given the complex nature of these cases — often involving corporate defendants with powerful legal teams — it is critically important to retain a law firm experienced in mass torts and familiar with local court procedures and judges.
Wisner Baum’s attorneys have handled numerous significant mass tort cases in the Northern District of California and San Francisco courts, including product liability lawsuits against pharmaceutical companies and defective medical device manufacturers that resulted in substantial recoveries for Bay Area residents.
A mass tort or personal injury lawsuit may result in the recovery of all losses or damages you have experienced due to your injury. A few common examples include pain and suffering, hospital bills, funeral/burial expenses, lost wages, missed time from school or work, and a loss of quality/enjoyment of life.
Since every case is unique, it is difficult to estimate the value of your case without consulting a lawyer. Depending on the severity of the injuries and losses, a personal injury case may be valued at a few thousand dollars or in the most tragic of situations victims may recover millions of dollars in damages. To receive a free case evaluation, contact Wisner Baum at (310) 207-3233.
No. Many individuals living elsewhere have cases that proceed in San Francisco courts or are included in MDL actions in the Northern District of California, especially in product liability and mass tort claims. Having a local attorney provides an edge in navigating local court rules and procedures.
Most personal injury and product liability cases in California must be filed within two years, but exact deadlines vary. Some cases involving exposure or latent injuries may have different timeframes. Speak with an attorney as soon as possible to protect your rights.
In a mass tort, many individuals file separate lawsuits with similar facts against a common defendant, but each person’s injuries and compensation are assessed individually. In a class action, one case represents all plaintiffs, and any recovery is shared. Traditional personal injury cases involve a single plaintiff and defendant. Mass torts often allow for more personalized compensation and are common for dangerous drugs, defective products, or toxic exposure.
The Northern District of California, headquartered in San Francisco, is a federal court that regularly handles major MDL and mass tort proceedings—especially in tech, pharmaceuticals, and consumer protection. It’s one of the most active courts for large-scale litigation in the country.
Yes. The courts here frequently serve as the home for national mass torts, class actions, and complex product liability litigation involving pharmaceuticals, medical devices, environmental claims, and more.
Depending on your case, compensation may include medical expenses, lost wages, pain and suffering, loss of enjoyment of life, and—for families of deceased victims—funeral and burial costs or punitive damages in cases of egregious wrongdoing.
Both. We have a strong Bay Area presence backed by nationwide experience. Our San Francisco clients get both local accessibility and national reach.
We work on a contingency fee basis—you pay nothing upfront, and we only get paid if we recover compensation for you.
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 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.
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.