Schedule A Lawsuits Explained: When One Patent Owner Sues Multiple Infringers
Patent and copyright owners facing widespread infringement often struggle with a practical challenge: how do you efficiently pursue legal action against dozens or even hundreds of infringers without filing separate lawsuits for each one? The answer for many intellectual property holders is a Schedule A lawsuit, a powerful but complex litigation strategy that allows one plaintiff to sue multiple defendants in a single action.
At Gallium Law, we help both patent owners structure effective Schedule A litigation campaigns and defendants named in Schedule A lawsuits understand their rights and develop appropriate defense strategies. This comprehensive guide explains what Schedule A lawsuits are, how they work in intellectual property cases, and what they mean whether you’re the plaintiff or a defendant.
What Is a Schedule A Lawsuit?
A Schedule A lawsuit is often described as a reverse class action. While a class action involves many plaintiffs suing one or a few defendants, a Schedule A lawsuit involves one plaintiff suing many defendants in a single legal action. The defendants are typically listed in an attachment to the complaint called “Schedule A,” which is where this type of lawsuit gets its name.
Schedule A lawsuits are particularly common in intellectual property litigation, where a single patent owner or copyright holder discovers numerous parties infringing the same intellectual property rights. Rather than filing separate lawsuits against each infringer, which would be expensive and inefficient, the plaintiff consolidates all defendants into one case.
How Schedule A Lawsuits Differ from Traditional Litigation
In traditional litigation, a plaintiff sues one defendant or a small group of related defendants. Each case proceeds independently with its own docket, discovery process, and resolution. When a patent owner faces infringement from many unrelated parties, filing individual lawsuits would require duplicating legal work, paying multiple filing fees, and managing numerous separate proceedings.
Schedule A lawsuits streamline this process by allowing the plaintiff to file one complaint naming all defendants. This approach reduces filing fees, consolidates common legal issues, and creates efficiency for both the court system and the plaintiff.
Why Schedule A Lawsuits Are Common in IP Cases
Intellectual property infringement often involves the same conduct repeated by many different parties. Understanding why Schedule A lawsuits fit IP disputes helps explain their prevalence in patent and copyright enforcement.
The Nature of IP Infringement
When someone creates a popular product or copyrighted work, copycat versions often proliferate rapidly. In the e-commerce era, dozens or hundreds of sellers might offer infringing products on platforms like Amazon, eBay, or through their own websites. Each seller is independently infringing the same patent or copyright.
For patent owners, the infringement analysis is often identical across defendants. If a patent covers a specific product design or technology, everyone selling substantially similar products likely infringes the same patent claims in the same way. This common infringement pattern makes Schedule A lawsuits particularly efficient.
Cost Efficiency for Patent Owners
Patent litigation is notoriously expensive. Filing separate lawsuits against each infringer could cost hundreds of thousands or millions of dollars in legal fees and court costs. Schedule A lawsuits reduce these costs by consolidating common work like claim construction, expert analysis, and legal briefing across all defendants.
This efficiency makes enforcement economically viable even against smaller infringers who might not justify the cost of individual lawsuits. Without Schedule A procedures, many patent owners would simply ignore widespread infringement because pursuing each infringer separately wouldn’t be cost-effective.

How Schedule A Lawsuits Proceed
Understanding the procedural mechanics of Schedule A lawsuits helps both plaintiffs and defendants navigate these cases effectively.
Filing and Initial Stages
The plaintiff files a single complaint listing all defendants on Schedule A. The complaint typically alleges that each defendant is infringing the same intellectual property rights through similar or identical conduct. Each defendant must be properly served with the complaint and summons, giving them notice of the lawsuit and their deadline to respond.
Early Case Management
Courts often hold early case management conferences to determine how the case will proceed. Because Schedule A lawsuits involve many defendants, courts must decide whether to keep all defendants in one case or sever defendants into separate proceedings.
Defendants often move to sever, arguing that their cases should be separated because their specific circumstances differ from other defendants. Plaintiffs typically oppose severance, arguing that common issues predominate and that keeping defendants together serves judicial efficiency.
Discovery Challenges
Discovery in Schedule A cases can be complex. While some discovery is common to all defendants, such as claim construction and validity issues, other discovery is defendant-specific, such as sales figures, knowledge of the patent, and design decisions.
Courts often implement phased discovery, addressing common issues first before proceeding to defendant-specific discovery. This approach balances efficiency with each defendant’s right to present their individual defenses.
Strategic Considerations for Patent Owners
Patent owners considering Schedule A litigation should carefully evaluate whether this approach serves their enforcement objectives.
Advantages of Schedule A Lawsuits
Schedule A lawsuits offer several benefits for patent owners. The approach dramatically reduces litigation costs compared to separate lawsuits, creates settlement pressure by demonstrating serious enforcement intent, allows efficient resolution of common legal issues, and may generate substantial aggregate damages or licensing revenue.
For patent owners with strong patents and clear infringement by many parties, Schedule A lawsuits can be highly effective enforcement tools. Our licensing and strategy services help patent owners evaluate whether Schedule A litigation aligns with their broader IP strategy.
Potential Drawbacks and Risks
Schedule A lawsuits also present challenges. Courts may sever defendants, eliminating efficiency benefits. Defending against motions from multiple defendants creates legal work. Some defendants may have strong invalidity or non-infringement defenses that could undermine the entire case. Managing settlement negotiations with numerous defendants requires significant coordination.
Patent owners should conduct thorough due diligence before filing Schedule A lawsuits, including validity analysis, infringement assessment for each defendant, and evaluation of potential defenses that defendants might raise.
Building an Effective Schedule A Case
Successful Schedule A litigation requires careful preparation. Patent owners should document infringement thoroughly for each defendant, prepare detailed claim charts showing how each defendant’s products infringe, identify common infringement patterns that justify consolidated treatment, and develop a litigation budget that accounts for the complexity of managing multiple defendants.
Working with experienced counsel who understand Schedule A procedures is essential to structuring cases that courts will keep consolidated and that lead to favorable outcomes.
What Schedule A Lawsuits Mean for Defendants
If you’ve been named as a defendant in a Schedule A lawsuit, understanding your position and options is crucial.
Your Rights as a Defendant
Despite being grouped with other defendants, you maintain individual rights. You can file your own answer asserting specific defenses, conduct discovery relevant to your case, move for severance if your circumstances differ significantly from other defendants, and settle independently without requiring other defendants’ agreement.
The fact that you’re named alongside other defendants doesn’t mean you’ll be treated identically. Courts recognize that individual defendants may have unique defenses or circumstances.
Common Defense Strategies
Defendants in Schedule A cases often pursue several strategic approaches. Many file motions to sever, arguing their case should be separated from other defendants. This can be successful if you can show meaningful differences between your situation and other defendants.
Defendants also commonly coordinate defenses with other defendants where interests align. Sharing the costs of common defenses like invalidity challenges can reduce individual defendant litigation expenses.
Some defendants settle early to avoid litigation costs and uncertainty. Others fight vigorously if they believe they have strong non-infringement or invalidity defenses.
The Importance of Acting Quickly
Being named in a Schedule A lawsuit doesn’t reduce your response deadlines. You still must respond within 21 days of being served (or 60 days if you waive service). Missing this deadline can result in default judgment even if other defendants are actively defending.
Immediately consult with experienced patent litigation counsel to evaluate your options and develop an appropriate response strategy.
Special Considerations for E-Commerce Sellers
Many Schedule A lawsuits target online sellers, particularly those on platforms like Amazon or eBay. These cases present unique considerations for defendant sellers.
Marketplace Implications
Being named in a patent lawsuit often triggers product takedowns on e-commerce platforms. Understanding how to manage both the federal lawsuit and platform-specific procedures is critical. Our experience with Amazon intellectual property issues helps sellers navigate both simultaneously.
Settlement Economics for Smaller Sellers
Small and medium-sized sellers face difficult decisions in Schedule A cases. Legal defense costs often exceed potential settlement amounts, creating pressure to settle even if you believe you have strong defenses. However, settling may require ceasing sales of profitable products.
Evaluating your specific exposure, potential defenses, and settlement options with experienced counsel helps you make informed decisions about how to proceed.
How Gallium Law Can Help
Whether you’re a patent owner considering Schedule A litigation or a defendant named in a Schedule A lawsuit, Gallium Law provides comprehensive legal services tailored to your needs.
For Patent Owners and Plaintiffs
We help patent owners evaluate whether Schedule A litigation serves their enforcement objectives, conduct pre-filing due diligence and infringement analysis, prepare comprehensive complaints and supporting documentation, manage complex multi-defendant litigation, and negotiate settlements with numerous defendants efficiently.
Our team understands the strategic and procedural complexities of Schedule A cases and works to maximize the value of your intellectual property through effective enforcement.
For Defendants
If you’ve been named in a Schedule A lawsuit, we provide immediate response services to meet tight deadlines, severance motions when appropriate, coordination with other defendants for cost-effective common defenses, individual defense strategies tailored to your specific circumstances, and settlement negotiation to achieve favorable terms.
We understand the fear and uncertainty defendants face in Schedule A cases and work efficiently to protect your interests while managing costs.
Moving Forward with Schedule A Litigation
Schedule A lawsuits represent powerful tools for patent owners facing widespread infringement and significant challenges for defendants named in these consolidated actions. Whether you’re considering filing a Schedule A lawsuit or defending against one, understanding the procedural mechanics, strategic considerations, and available options is essential.
At Gallium Law, our comprehensive services include all aspects of Schedule A litigation for both plaintiffs and defendants. Our team combines deep patent law expertise with practical litigation experience to deliver effective representation in these complex cases.
Contact us today to discuss your Schedule A litigation needs and develop a strategy that protects your interests and achieves your objectives.