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San Francisco Personal Injury Lawyer
Decades of Recovering Compensation for Those Injured

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.

Local Experience. National Reach.

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.

Fighting for Bay Area Families in Mass Tort Cases

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:

  • Defective and recalled prescription medications
  • Unsafe medical devices and implants
  • Toxic chemical and environmental exposure
  • Catastrophic transportation accidents (aviation, train, bus)
  • Complex industrial injuries
  • Large-scale consumer fraud and product defect claims

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.

How Mass Tort Lawsuits Work for San Francisco Residents

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:

  1. Case Assessment & Filing: We investigate your injuries, collect your records, and file your claim in the appropriate court.
  2. MDL or Consolidation: Your matter may be combined with similar cases for coordinated discovery and pretrial proceedings—frequently in San Francisco’s federal court.
  3. Bellwether Trials & Resolution: Key trial cases often set the stage for global settlements or verdicts, and we fight to ensure your story is heard and your losses are recognized.
  4. Local Advantage: Our knowledge of San Francisco courts and procedures helps position your case for success.

What to Do After a Serious Injury or Harmful Product Incident

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:

  1. Get Medical Help Immediately. Your health always comes first, and medical records will be key to your case.
  2. Save Evidence. Keep defective products, medication packaging, or anything related to your injury.
  3. Write It Down. Document your injuries, treatment, lost wages, and daily challenges.
  4. Contact Our San Francisco Lawyers. Don’t wait to get answers—California law gives you only a limited time to file a claim.

San Francisco Legal Resources for Injury, Mass Tort & Consumer Claims

San Francisco Superior Court – Civil Division

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.

U.S. District Court, Northern District of California

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.

California Code of Civil Procedure

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.

Trauma Centers

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.  

City of San Francisco Consumer Protection Office

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. 

Personal Injury and Mass Tort Cases We Accept

At Wisner Baum, we represent claimants in personal injury lawsuits involving the following types of accidents and incidents:

  • Pharmaceutical Drug Claims: Dangerous or defective medications causing widespread adverse effects, including recalled or controversial prescription drugs.
  • Defective Medical Device Claims: Defective implants, artificial joints, port catheters, mesh products, and other medical devices that have injured many.
  • Toxic Exposure & Environmental Claims: Cases involving exposure to asbestos, benzene, PFAS (forever chemicals), lead, industrial pollution, or chemical spills impacting communities.
  • Transportation Accidents: Large-scale accidents involving buses, trains, or commercial vehicles with multiple injured parties, often consolidated in MDLs or coordinated state proceedings.
  • Wrongful Death Claims: Fatalities resulting from mass tort events, including industrial disasters and product defects impacting families across the Bay Area.
  • Class Action & Consolidated Litigation: We also represent clients in class actions tied to mass torts, ensuring collective claims are enforced effectively.

Filing a Mass Tort or Personal Injury Lawsuit in San Francisco

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.

Potential Compensation for Mass Tort and Personal Injury Claims

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.

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Accident Lawyers Near Me
Our Bay Area office is conveniently located in Greenbrae off the 101 and Sir Francis Drake Blvd.
Proven Track Record
Our Bay Area attorneys have won over $4 billion for clients. We know what it takes to win big cases against big companies.
No Fees Unless We Win
Wisner Baum offers free case evaluations. If we do not obtain compensation on your behalf, you owe us nothing.
Frequently Asked Questions (FAQs)

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.

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.
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$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.
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$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.
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$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.

Mass Tort News LegalCast
LegalCast by Mass Tort News delivers insider access to the litigation shaping history. Hosted by Mark York and Elisa D’Amico, it features breaking updates, expert panels, and exclusive insights from leaders in mass torts, whistleblower cases, class actions, and more.
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Thoughts, insights, analysis, and perspective from the front lines of justice.
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Toxic Inaction Leaves Kids at Risk
Hundreds of families are reeling after lead-contaminated applesauce pouches sickened children nationwide. Despite years of warnings, there’s still no action from the FDA or Congress.
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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.
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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
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