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Discovery in a Mass Tort Lawsuit

A mass tort occurs when multiple people are harmed by the same event, defective product, or misconduct of one or more defendants. The cases generally involve similar questions of fact but are kept individualized for purposes of compensation. Courts treat mass torts as complex litigation, and they often involve extraordinary amounts of evidence. The discovery process in mass tort cases allows parties to request and review information that may be relevant to the case. Discovery often plays a crucial role in determining the success or failure of the litigation and whether a plaintiff receives full and fair compensation.

What Is Discovery in a Mass Tort Case?

The discovery process in a lawsuit allows each party to request and review information and documents about the case. The discovery phase is often the longest part of litigation and may involve depositions, in which a witness or expert answers questions under oath, interrogatories (written questions), and documents such as internal corporate communications.

Discovery in a mass tort case differs from a single-plaintiff case due to its scope, coordination, and the number of parties involved. Mass tort litigation may involve complex issues such as allegations of corporate misconduct involving defective medical devices, dangerous drugs with serious side effects, a cancer-causing chemical being marketed as safe, or a plane crash caused by safety shortcuts. The volume of plaintiffs alone can present challenges to receiving information that may be critical to the case, making the discovery phase one of the most essential parts of the litigation process.  

Key Components of the Discovery Process

The discovery process in mass tort cases can be extensive. Due to the comprehensive information that may be available in these cases, discovery efforts are frequently coordinated to save time and money and avoid duplicative requests.

The Federal Rules of Civil Procedure govern how discovery is conducted in federal court, including mass tort litigation. Individual states have different rules governing how discovery is conducted in state court litigation.

Discovery in a lawsuit may include:

  • Document request and exchange: One of the first steps in discovery is submitting a document request. This may be done through informal communication with the other party, generally through each side's attorneys. If the other party does not respond or fully cooperate with an informal document request, a formal request for production of documents may be issued, or a subpoena may be used to obtain records from third parties.
  • Depositions: A deposition is a formal, out-of-court oral testimony provided under oath. Each party may request depositions from both witnesses and experts who may have information or give testimony in a case. 
  • Expert witness discovery: Mass tort cases often require testimony from expert witnesses. During the discovery process, each party may depose or request information from any expert witnesses who may provide their opinion during the case. 
  • Interrogatories: Interrogatories are written questions that either party can submit to the other party. They require a written response and may be used to obtain or clarify information that may be pertinent to the case. 
  • Plaintiff Fact Sheets: Many times, in mass tort litigation, some forms of discovery directed at individual plaintiffs are replaced by court ordered plaintiff fact sheets. These forms and records authorizations, filled out and signed under penalty of perjury by each individual plaintiff, become the basis for the factual information used to evaluate individual cases and may be used by the lawyers for both sides and the court to help pick cases for initial bellwether trials and to aid in settlement discussions.

Unique Challenges and Disputes in Mass Tort Discovery

The size and complexity of a mass tort case can make the discovery process not only long but also challenging. This phase is often the most resource-intensive, requiring significant cost, coordination, and a detailed knowledge of procedural law. The discovery stage in a mass tort case can be contentious as parties juggle scope, confidentiality, and privilege, while also dealing with time constraints.

Challenges and disputes that may arise in the process of discovery:

  • Volume and complexity: Discovery in major mass tort cases can involve millions of documents. The sheer scale of the litigation, which may involve thousands of plaintiffs, can make even basic information exchanges logistically complex. Coordination between parties can be complicated as each tries to avoid duplicative requests and ensure efficiency. Mismanaged discovery requests can lead to delays in proceedings and the risk of spoliation. 
  • Scope: Defendants in mass tort cases frequently argue that discovery requests are “overly broad” or “unduly burdensome.” To ensure requests are answered, they must be relevant and fall within the scope of the matter. 
  • Privilege and confidentiality: Defendants in mass tort cases, which are often corporations or companies, may withhold information claiming attorney-client privilege or IP protection. They may also seek protective orders in an effort to keep damaging information from public view. Working with a mass tort attorney who knows the law and can fight against privilege claims is critical to ensure discovery requests are answered. 
  • Cost: The discovery phase is frequently one of the most costly in complex litigation. Attorneys for the defense may bring proportionality arguments claiming that the discovery costs outweigh the case’s value. If granted, some discovery requests may remain unanswered.
  • Time: The discovery phase in a mass tort lawsuit often takes 24 to 48 months, depending on the circumstances of the case. In more complex cases, the process may extend even longer. Understanding realistic timelines helps set proper expectations at each step of litigation. 

Examples of Discovery Turning Points in Major Mass Torts

Information uncovered during discovery can be a turning point in a major mass tort lawsuit, as was evidenced by the Monsanto Papers in the Roundup litigation. The Monsanto Papers refer to millions of internal documents obtained by attorneys with Wisner Baum through the discovery process. The documents revealed a systemic campaign of corruption. They detailed manipulation of scientific research, purposeful concealment of safety information, and a coordinated effort to undermine the processes designed to keep consumers safe from dangerous products. 

The papers were declassified and made available to the public through the determined efforts of Wisner Baum. They helped impact the outcome in many Roundup lawsuits, including nearly $11 billion in negotiated settlements and multi-billion-dollar jury verdicts.

How Discovery Impacts Settlements and Verdicts

Information obtained during the discovery process can uncover strengths or weaknesses in a particular case. Ultimately, the discovery phase can shape negotiations, influence settlement values, and impact trial outcomes. 

One of the most significant examples of how discovery can influence the direction of a mass tort are the Roundup related documents discussed above. The information contained in those documents directly led to the large jury verdicts at trials and the eventual settlement of thousands of cases.

Contact Our Mass Tort Attorneys

Individuals harmed by a defective product or wrongful corporate conduct are encouraged to contact Wisner Baum to schedule a free, no-obligation consultation. Wisner Baum is a proven leader in mass tort litigation, having served on leadership committees for some of the largest MDLs in the nation. 

Attorneys with the firm were instrumental in getting the Monsanto Papers released through the discovery process in the Roundup litigation and continue to work tirelessly to hold companies accountable when their products or conduct causes harm to consumers. Contact Wisner Baum today to schedule your confidential case evaluation.

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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.
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.

Discovery FAQs

The discovery phase in a mass tort lawsuit generally takes 24-48 months, though more complex cases may extend even longer. The timeline depends on factors such as the volume of documents, the number of plaintiffs, and how contentious the discovery process becomes between parties.

If a party refuses to comply with a discovery request, the requesting party may file a motion to compel with the court. If the court grants the motion and the party still fails to produce the discovery, the party withholding documents may face sanction and contempt of court. 

Mass tort discovery differs primarily in scale and coordination; mass tort litigation can involve tens of millions. Discovery in mass torts is often coordinated through a plaintiffs’ leadership committee to avoid duplicative requests and ensure efficiency across thousands of individual cases.

Discovery requests in mass tort cases may seek internal corporate communications, safety and testing data, marketing materials, regulatory submissions, emails between executives, scientific studies (both published and suppressed), and financial records related to the product at issue. 

Defendants may attempt to withhold information by claiming work product protection or trade secret status, as examples. They may also seek protective orders to keep certain documents confidential. Experienced mass tort attorneys know how to challenge these claims and fight for the release of relevant evidence. 

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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