Anti-SLAPP laws are state statutes that let someone sued over protected speech file a special early motion to dismiss the case, freeze discovery while the motion is pending, and, in most states, recover attorney fees from the plaintiff who filed the suit. Forty states and the District of Columbia now have one on the books. The point is to end a Strategic Lawsuit Against Public Participation before legal bills do the silencing the lawsuit was designed to accomplish.
How to Tell If You’re Facing a SLAPP
A SLAPP is a lawsuit filed not to win but to drain your time and money until you stop speaking. On paper it looks like an ordinary civil claim. In practice, the plaintiff is usually a well-funded entity (a developer, corporation, landlord, or government contractor) and the defendant has far fewer resources: a community activist, a journalist, a neighborhood group member, or a consumer who posted a negative review.
Defamation is the most common cause of action, followed by business or economic interference claims. Intentional infliction of emotional distress, conspiracy, and trespass show up too. The specific theory matters less to the filer than the fact that a lawsuit exists at all. Once you’re served, you have to respond, hire a lawyer, and start spending money. That is the entire point.
A legitimate claim seeks compensation for a real, identifiable harm. A SLAPP makes the process itself the punishment. If the claims are built on activity that looks like public participation (speaking at a zoning hearing, writing to a regulator, posting about a company’s environmental record) and the plaintiff has no realistic path to winning on the merits, you’re likely looking at a SLAPP.
What Speech Anti-SLAPP Laws Cover
The exact scope varies by state, but the core categories are consistent: statements made in connection with government proceedings (legislative hearings, public comment periods, regulatory filings), statements made before a court or judicial body, and speech on issues of public interest or concern.
Public interest is where most disputes arise. Environmental advocacy, consumer safety complaints, criticism of public officials, reporting on business practices affecting a community, and online reviews of services open to the general public qualify in most states with broad statutes. The question is whether the speech contributes to public understanding of a social, economic, or political issue, not whether the speaker is famous or the audience is large.
Purely private disputes fall outside these protections. A breach-of-contract fight between two businesses, a personal grudge that spills into litigation, or a private employment disagreement won’t trigger anti-SLAPP coverage just because someone files a motion. The speech has to connect to something beyond the two parties in front of the court.
States sit on a spectrum. Massachusetts limits protection mainly to petitioning activity directed at the government. California sweeps much broader and covers speech made in any public forum about any public issue. Where your state falls matters when you’re deciding whether a motion is realistic.
How the Anti-SLAPP Motion Works
Instead of spending months or years in discovery and pretrial motions, you file a special motion to dismiss (sometimes called a motion to strike) early in the case. The court then applies a two-step analysis that flips the normal litigation script.
Step one: the defendant must show the lawsuit targets speech or conduct protected by the statute. If the defendant clears that threshold, the burden shifts. The plaintiff must then show a reasonable probability of winning on the merits with real evidence, not just the allegations in the complaint. If the plaintiff can’t make that showing, the court dismisses the case.
Deadlines are tight and they vary. Some states set a 60-day window from service of the complaint; others allow 90 or 120 days. Missing the window can forfeit your right to use the procedure at all, so check your state’s timeline the moment you’re served.
Most anti-SLAPP statutes include an automatic stay of discovery once the motion is filed. This is one of the law’s most powerful features. It halts depositions, document requests, and interrogatories, cutting off the plaintiff’s ability to run up the defendant’s legal bills while the motion is pending. Some states let the plaintiff ask the court to lift the stay for limited, targeted discovery on a showing of good cause, but the default is that everything stops until the judge rules.
Who Pays the Attorney Fees
Fee-shifting is what gives anti-SLAPP laws real teeth. In most states, a defendant who wins the motion is entitled to recover reasonable attorney fees and costs from the plaintiff. Instead of the defendant absorbing all the financial pain, the plaintiff ends up paying for both sides.
How fee-shifting works depends on the state. Many states make the award mandatory for a prevailing defendant, with no judicial discretion to decline. Others make it discretionary. Maryland has no fee-shifting provision at all. Florida uses a “loser pays” rule on anti-SLAPP motions, meaning a defendant who files the motion and loses may owe the plaintiff’s fees, a structure that discourages defendants from using the statute in borderline cases.
After winning, the defendant files a separate fee motion supported by detailed billing records. Courts evaluate reasonableness against local market rates. Awards vary widely with case complexity. Judges in some states can also impose additional sanctions if they find the SLAPP was filed purely to harass. For a plaintiff thinking about using litigation to silence a critic, that exposure is supposed to be the deterrent.
When the Motion Isn’t Available
Anti-SLAPP statutes aren’t blanket immunity, and most states carve out exemptions where the motion is unavailable even if the underlying speech touches a public issue.
The most common exemption is commercial speech. When a business makes factual representations about its own products or a competitor’s products to generate sales, many states exclude those statements. A consumer suing a company for false advertising shouldn’t face an anti-SLAPP motion just because the ad appeared in a public forum. The exemption typically requires that the speaker is in the business of selling goods or services, the statement was made to promote those sales, and the audience was actual or potential customers.
Public interest enforcement actions are another frequent exemption. If a lawsuit is brought solely to enforce an important public right, seeks no relief beyond what benefits the general public, and private enforcement is necessary because no agency is acting, some states block the defendant from using anti-SLAPP procedures to dismiss it. This prevents companies from wielding the statute to shut down legitimate public-interest litigation. The boundaries differ significantly from state to state, so whether a case falls within an exemption often turns on specific statutory language.
Appealing an Anti-SLAPP Ruling
Many anti-SLAPP statutes give the losing party an immediate right to appeal, without waiting for a final judgment. That’s unusual in civil litigation, where most pretrial rulings can only be challenged after the whole case concludes.
The immediate appeal right matters most for defendants. If a judge denies your motion, you’d otherwise have to litigate the full case (exactly the burden the statute was supposed to prevent) before getting appellate review. An immediate appeal lets you challenge the denial while the discovery stay remains in effect. The Uniform Public Expression Protection Act, adopted in 15 states, includes this right explicitly.
Anti-SLAPP Protection in Federal Court
Congress has never passed a federal anti-SLAPP law, which creates a significant gap for defendants sued in federal court. When a case is in federal court on diversity grounds, can the defendant invoke the state anti-SLAPP law where the court sits? The federal circuits are deeply split.
The First and Ninth Circuits have allowed defendants to use state anti-SLAPP protections in diversity cases, reasoning that these laws create substantive rights federal courts must respect. The Second, Fifth, Eleventh, and D.C. Circuits have gone the other way, holding that state anti-SLAPP procedures conflict with the Federal Rules of Civil Procedure and can’t apply in federal court. Some federal circuits also treat anti-SLAPP denials as immediately appealable under the collateral order doctrine; others reject immediate appeal, concluding that the analysis isn’t truly separate from the merits of the underlying case.
The practical result: a SLAPP plaintiff can sometimes dodge anti-SLAPP protection by filing in federal court, or by filing in a circuit that doesn’t recognize state anti-SLAPP motions. The same speech, targeted by the same kind of meritless suit, gets different levels of protection depending on which courthouse the plaintiff chooses.
Why Your State Matters
The strength of anti-SLAPP protection depends heavily on where you live. Some state statutes are strong, with broad definitions of protected speech, mandatory fee-shifting, discovery stays, and immediate appeal rights. Others are narrow, covering only petitioning activity or lacking meaningful financial penalties. As of early 2026, roughly ten states still have no anti-SLAPP law at all.
The Uniform Public Expression Protection Act is the most organized effort to standardize these protections. UPEPA has been adopted in 15 states and includes the features that make anti-SLAPP laws effective: an early motion to dismiss, a standard of review similar to summary judgment (the plaintiff must show their claims are legally and factually sustainable), mandatory attorney fees for prevailing defendants, an automatic discovery stay, and an immediate right to appeal if the motion is denied.
Momentum is slow but real. South Dakota became the 40th state to enact a law in March 2026, and Michigan adopted one in late 2025. In the remaining holdout states, options are limited. You can still raise First Amendment defenses and move for summary judgment, but you won’t get the early dismissal mechanism, the discovery stay, or mandatory fee-shifting. You’re stuck playing the expensive, drawn-out game that SLAPP plaintiffs are counting on.
Suing Back After a Dismissal
After winning an anti-SLAPP motion, some defendants want to go further and sue the person who filed the SLAPP. These counterattacks, sometimes called SLAPPback claims, usually take the form of malicious prosecution or abuse of process lawsuits. The theory is that the original plaintiff knowingly filed a baseless case to intimidate the defendant, and that conduct itself is actionable.
A handful of states have enacted specific SLAPPback provisions, treating these claims as distinct from ordinary malicious prosecution because they arise from the misuse of litigation to suppress constitutional rights. An important safeguard in some of these laws: the original SLAPP plaintiff cannot turn around and use an anti-SLAPP motion to dismiss the SLAPPback claim if their original lawsuit was found baseless as a matter of law. Without that rule, the statute designed to stop SLAPP filers could be weaponized by them.
SLAPPback claims are hard to win. Malicious prosecution requires showing the prior case ended in the defendant’s favor (the anti-SLAPP dismissal satisfies this), that the plaintiff lacked probable cause, and that the plaintiff acted with malice. Courts set a high bar for proving malice, and not every losing SLAPP plaintiff clears it. Even so, the possibility of a SLAPPback adds another layer of deterrence for anyone considering litigation as a silencing tool.