To win a malicious prosecution case in California, you have to prove four things about the earlier lawsuit that was brought against you: it ended in your favor on the merits, it was filed without probable cause, it was driven by an improper motive, and it caused you real harm. Fail on any one element and the whole claim collapses. California courts set the bar high on purpose, because the legal system depends on people feeling free to bring disputes to court without fearing retaliation if they lose.
The Prior Lawsuit Ended in Your Favor
The first thing you need is a prior case that ended in a way that reflected on the merits. A jury verdict in your favor is the cleanest example. Summary judgment counts. So does a dismissal because the other side never produced evidence to support their claims.1Justia. CACI No. 1501 Wrongful Use of Civil Proceedings
A voluntary dismissal by the person who sued you also qualifies, even when filed “without prejudice.” The reasoning is that walking away signals a lack of confidence in the case.2Justia Law. MacDonald v. Joslyn
Other endings do not count. A dismissal for lack of jurisdiction or on statute-of-limitations grounds says nothing about whether the claims had merit. Neither does a settlement or a negotiated dismissal, because a compromise leaves the question of who was right unanswered.1Justia. CACI No. 1501 Wrongful Use of Civil Proceedings
This is where many claims end before they begin. If you paid something to make the prior case go away, you generally cannot then sue for malicious prosecution, even if the claims against you were baseless.
The Prior Lawsuit Lacked Probable Cause
The second element asks whether any reasonable attorney would have thought the original lawsuit was legally tenable when it was filed. It is an objective test. Whether the person who sued you personally believed in the case does not matter. What matters is whether a competent lawyer, looking at the same facts and law, would have seen enough potential merit to file.3Justia Law. Sheldon Appel Co. v. Albert and Oliker
The California Supreme Court set this standard in Sheldon Appel Co. v. Albert & Oliker (1989). A case fails the test if it is factually baseless or if it relies on a legal theory no reasonable attorney would consider viable. When the facts are not in dispute, the judge decides probable cause as a legal question. If the judge finds the prior case was objectively tenable, probable cause exists and the malicious prosecution claim fails, no matter how careless the opposing lawyer’s research may have been.3Justia Law. Sheldon Appel Co. v. Albert and Oliker
Each Claim Is Evaluated Separately
If the earlier lawsuit contained several theories, California courts test probable cause for each one on its own. A malicious prosecution claim can rest on a single groundless theory even if the surrounding lawsuit contained legitimate claims. The California Supreme Court took this position in Bertero v. National General Corp. (1974), refusing to let one viable theory shield the whole lawsuit.4FindLaw. Crowley v. Katleman
The Advice-of-Counsel Defense
Someone who filed the prior lawsuit may point to their attorney’s recommendation that the case was worth bringing. If a jury believes it, that defense defeats the probable cause element. It works only if the person disclosed all the relevant facts to their attorney before getting the advice. You cannot withhold damaging information, get a green light, and then hide behind counsel’s advice. On the other hand, the client is not expected to audit the attorney’s legal expertise; good-faith reliance on a licensed attorney’s recommendation is enough when the factual disclosures were complete.1Justia. CACI No. 1501 Wrongful Use of Civil Proceedings
The Filer Acted With Malice
The third element is subjective. Why did they file? You have to show the lawsuit was driven primarily by a purpose other than winning on the merits. Malice here does not mean personal hatred. Filing to harass someone, to pressure a settlement on an unrelated dispute, or to drain a competitor’s resources all qualify.1Justia. CACI No. 1501 Wrongful Use of Civil Proceedings
People rarely admit an improper motive, so malice almost always has to be proven circumstantially. Internal communications showing hostility, a pattern of similar filings and dismissals, suspicious timing tied to an unrelated dispute, or evidence that the filer ignored obvious facts undermining the case can all support the inference.
Why a Weak Case Alone Is Not Enough
Older California decisions let juries infer malice from the absence of probable cause. After Sheldon Appel made probable cause a purely objective question, that shortcut lost its footing. A court of appeal explained the reasoning: if probable cause turns on whether the claim was objectively tenable rather than on what the filer believed, the absence of probable cause tells you nothing about the filer’s state of mind. You need evidence of an improper purpose beyond the fact that the claim was meritless.5FindLaw. Downey Venture v. LMI Insurance Company
There is one important twist. When someone keeps pursuing a lawsuit after learning it has no factual or legal support, courts are more willing to infer malice from that continued prosecution. If you know your case is baseless and you push on anyway, the most plausible explanation is that you have a purpose other than winning.1Justia. CACI No. 1501 Wrongful Use of Civil Proceedings
Attorneys Can Be Liable for Continuing a Meritless Case
Liability is not limited to the party who signed the original complaint. In Zamos v. Stroud (2004), the California Supreme Court held that an attorney can be personally liable for malicious prosecution if they continue prosecuting a case after discovering it lacks probable cause.6FindLaw. Zamos v. Stroud A later appellate decision extended this reasoning to malice formed after the initial filing, so the intent to misuse the legal system does not have to exist on day one. If the filer or their attorney develops an improper purpose later and keeps the case alive, malicious prosecution can attach from that point.1Justia. CACI No. 1501 Wrongful Use of Civil Proceedings
This rule matters because many baseless lawsuits are not baseless from the start. As discovery reveals a claim is unfounded, both the client and the attorney face a real choice, and pressing on with knowledge of the weakness creates exposure for both.
Damages You Can Recover
Proving the first three elements is not enough. You also have to show real harm from defending the earlier lawsuit. California recognizes three categories.
Economic losses are the most straightforward: attorney’s fees and litigation costs you paid to defend the original case, lost wages, and business revenue you lost as a direct result. These need documentation.
Non-economic harm covers emotional distress, anxiety, and damage to personal or professional reputation caused by the wrongful litigation. There are no receipts for this, so testimony about the impact on your life carries weight.
Punitive damages may be available when the conduct was especially egregious. California requires clear and convincing evidence of malice, oppression, or fraud as those terms are defined by statute.7California Legislative Information. California Civil Code 3294
The Anti-SLAPP Motion
Here is the practical trap. Filing a lawsuit is treated as an exercise of the constitutional right to petition, which means your malicious prosecution claim itself is vulnerable under California’s anti-SLAPP statute. The defendant can file a special motion to strike, typically within 60 days of service, arguing that your claim targets protected petitioning activity.8California Legislative Information. California Code of Civil Procedure 425.16
Once that motion is filed, the burden shifts to you early in the case. You must show a probability of prevailing on each element. If you cannot, the court strikes your complaint and you pay the other side’s attorney’s fees and costs.8California Legislative Information. California Code of Civil Procedure 425.16 The fee-shifting was designed to discourage retaliatory claims that chill protected speech, and it makes filing a weak malicious prosecution case financially dangerous. Strong evidence on all four elements needs to be in hand before the complaint goes out, not gathered afterward.
The Two-Year Deadline
You have two years from the favorable termination of the underlying lawsuit to file. The clock starts at final resolution of the prior case. Malicious prosecution falls under the general two-year period for personal injury torts.9California Legislative Information. California Code of Civil Procedure 335.1 Miss it and the court will dismiss the case no matter how strong the evidence.
How This Differs From Abuse of Process
The two claims are often confused, but they target different behavior. Malicious prosecution addresses the wrongful filing (or continued prosecution) of a meritless lawsuit. Abuse of process addresses the misuse of specific litigation tools within a case that may or may not have been properly filed. Weaponizing discovery to harass, or misusing an attachment to seize property as leverage, are classic examples.10Justia. CACI No. 1520 Abuse of Process – Essential Factual Elements
The distinction has practical consequences. Abuse of process does not require favorable termination of the prior case, so you can bring it while the underlying lawsuit is still pending or even if you lost. What you have to show is that the other party intentionally misused a particular procedure for a purpose it was not designed to serve, and that the misuse caused you harm. Filing or maintaining a whole lawsuit for an improper purpose, without more, is not abuse of process; that is malicious prosecution.10Justia. CACI No. 1520 Abuse of Process – Essential Factual Elements