This case is hereby resubmitted effective the date of this order.

The opinion filed on January 29, 2004, is withdrawn and replaced by the attached opinion.

With this withdrawal and replacement, the petition for panel rehearing and the petition for rehearing en banc are DENIED.

Louie Guerrero pleaded guilty to two separate charges of possession of narcotics. Years later, he brought claims under 42 U.S.C. § 1983 stemming from allegations of wrongful arrest, malicious prosecution, and a general conspiracy of "bad behavior" among Los Angeles officials in connection with his arrests, prosecutions, and incarceration. Heck v. Humphrey1 bars all but one of his § 1983 claims. The statute of limitations bars half of the one remaining § 1983 claim. Thus, the other half of that one § 1983 claim remains. Additionally, Guerrero brings claims under the Racketeer Influenced and Corrupt Organizations Act ("RICO").2 The district court granted Defendants' motions to dismiss under Federal Rule of Civil Procedure 12(b)(6), and Guerrero appeals. We affirm in part and reverse in part the district court's dismissal as to his § 1983 claims, reverse as to his RICO claims, and remand.

Guerrero's claims arise from two separate encounters with members of the Los Angeles Police Department ("LAPD"). On November 29, 1995, Officer Zamora and another unidentified officer of the LAPD stopped and searched Guerrero. Guerrero alleges that the officers planted narcotics on him during the course of the search. Charged with possession of the narcotics, Guerrero pleaded guilty, and the court placed him on probation.

Two years later, on November 14, 1997, Officer Martinez and two unidentified LAPD officers stopped and searched Guerrero a second time. According to Guerrero, the officers "grabbed him, punched him, choked him, and kicked him" and again "caused false narcotics charges to be made against" him. Guerrero pleaded guilty to these second narcotics charges. He was incarcerated from the date of his arrest in 1997 until August 1999.

Nearly three years after his second encounter, on June 30, 2000, Guerrero filed this lawsuit. Alleging violations of 42 U.S.C. § 1983 and RICO, his complaint named approximately 231 defendants, including former LAPD police chiefs, numerous police officers, several city attorneys, the mayor of Los Angeles, and a former district attorney. Although Guerrero's claims are somewhat amorphous, they can be characterized as claims of excessive force, wrongful arrest, and malicious prosecution. He also avers that a conspiracy of "bad behavior" existed among the defendants. Prior to June 2000, Guerrero had never contested his arrests, convictions, or sentences.

The district court initially denied a motion to dismiss under Federal Rule of Civil Procedure 12(b)(6) brought by one of the 231 defendants, Bernard Parks. Shortly thereafter, the case was transferred to a new judge along with other similarly situated cases that arose out of the LAPD Rampart scandal.3 Defendants, including Parks, filed further Rule 12(b)(6) motions to dismiss. The court granted these motions, properly treating Parks' second Rule 12(b)(6) motion as a request for reconsideration.4 Guerrero timely appealed.

We review de novo a dismissal under Federal Rule of Civil Procedure 12(b)(6).5 Dismissal is appropriate only when the plaintiff can prove no set of facts in support of his claims that would entitle him to relief.6 We must take as true all allegations of material fact and construe them in the light most favorable to the nonmoving party.7 We generally limit our review to the contents of the complaint, but if support exists in the record, we may affirm a dismissal on any proper ground.8

A. Heck v. Humphrey Bars the Majority of Guerrero's § 1983 Claims

Under Heck v. Humphrey,9 a state prisoner cannot recover damages in a § 1983 suit if a judgment in favor of the plaintiff "would necessarily imply the invalidity of his conviction or sentence ... unless the plaintiff can demonstrate that the conviction or sentence has already been invalidated."10 Heck bars almost all of Guerrero's § 1983 claims because: a judgment in favor of Guerrero on those claims "would necessarily imply the invalidity of his conviction;" he cannot show that his conviction has already been invalidated; and no exception to Heck's bar applies.11 However, Heck does not bar Guerrero's § 1983 excessive force claim, discussed below, because this claim does not "necessarily imply the invalidity of his conviction or sentence."12 The officers' alleged use of excessive force during Guerrero's arrest does not preclude the possibility that Guerrero was still guilty of possession of narcotics.

Guerrero's success on the majority of his § 1983 claims would necessarily imply the invalidity of his two convictions for possession of narcotics. Wrongful arrest, malicious prosecution, and a conspiracy among Los Angeles officials to bring false charges against Guerrero could not have occurred unless he were innocent of the crimes for which he was convicted.

With regard to the invalidation of the conviction or sentence, the Heck Court required that:

a § 1983 plaintiff must prove that the conviction or sentence has been reversed on direct appeal, expunged by executive order, declared invalid by a state tribunal authorized to make such determination, or called into question by a federal court's issuance of a writ of habeas corpus.13

The Court also emphasized that "termination of the prior criminal proceeding in favor of the accused" is a necessary element for a successful § 1983 malicious prosecution claim.14

Guerrero's prior convictions have never been invalidated. We therefore hold that, with the exception of his excessive force claim, Heck bars Guerrero's § 1983 claims.

The fact that Guerrero is no longer in custody and thus cannot overturn his prior convictions by means of habeas corpus does not lift Heck's bar. Although exceptions to Heck's bar for plaintiffs no longer in custody may exist, as suggested by concurring members of the Supreme Court in Spencer v. Kemna15 and adopted by this court in Nonnette v. Small,16 any such exceptions would not apply here.

The Spencer concurrence suggests that a plaintiff's inability to pursue habeas relief after release from incarceration should create an exception to Heck's bar.17 The plaintiff in Spencer had diligently sought relief for his claim of invalid revocation of parole.18 After appealing the denial of his state habeas petition all the way to the state supreme court, he filed a federal habeas petition. His prison term ended, however, before the court could render a decision.19 Justice Souter, writing for the concurring justices, stated, "Heck did not hold that a released prisoner in Spencer's circumstances is out of court on a § 1983 claim."20 If that were the case, he explained, "[t]he convict given a fine alone... or sentenced to a term too short to permit even expeditious litigation without continuances before expiration of the sentence, would always be ineligible for § 1983 relief."21 Thus, Justice Souter's concurrence suggested that a prisoner who was no longer in custody and therefore unable to obtain habeas relief could pursue § 1983 claims.

In following the reasoning of the concurrence in Spencer, we have emphasized the importance of timely pursuit of available remedies in two cases. In Cunningham v. Gates,22 we held that Heck barred the plaintiff's § 1983 claims despite the fact that habeas relief was unavailable.23 Habeas relief was "impossible as a matter of law" in Cunningham's case because he failed timely to pursue it.24 We "decline[d] to hold that Cunningham's failure timely to pursue habeas remedies [took] his § 1983 claim out of Heck's purview."25

Although we held in Nonnette that the plaintiff could bring § 1983 claims despite the Heck bar because habeas relief was unavailable, we did so because Nonnette, unlike Cunningham, timely pursued appropriate relief from prior convictions.26 Nonnette was founded on the unfairness of barring a plaintiff's potentially legitimate constitutional claims when the individual immediately pursued relief after the incident giving rise to those claims and could not seek habeas relief only because of the shortness of his prison sentence.27 In reversing the district court's dismissal of Nonnette's § 1983 claims, we stated:

The fact that Nonnette has been released from the incarceration that his civil suit, if successful, would impugn, and that a habeas petition would be moot for that reason, differentiates this case from our recent decision in Cunningham v. Gates. In Cunningham, the plaintiff brought a civil suit that would have impugned the conviction for which he was still incarcerated; habeas corpus was unavailable only because he had let the time for such a petition expire. Under those circumstances, we declined to take the case out of the rule of Heck.28

Thus, a § 1983 plaintiff's timely pursuit of available habeas relief is important. Even so, we emphasized that Nonnette's relief from Heck "affects only former prisoners challenging loss of good-time credits, revocation of parole or similar matters," not challenges to an underlying conviction such as those Guerrero brought.29

We find Guerrero's situation to resemble Cunningham more closely than Nonnette. Guerrero never challenged his convictions by any means prior to filing this lawsuit. Nearly three years passed from his last encounter with the LAPD before he took any action at all. His failure timely to achieve habeas relief is self-imposed. Thus, as in Cunningham, though habeas relief for Guerrero may be "impossible as a matter of law," we decline to extend the relaxation of Heck's requirements.30 Guerrero cannot now use his "failure timely to pursue habeas remedies" as a shield against the implications of Heck.31 Accordingly, we hold that Heck bars Guerrero's § 1983 claims of wrongful arrest, malicious prosecution, and conspiracy.

B. The Statute of Limitations Bars Part of Guerrero's Excessive Force Claim

Guerrero's remaining § 1983 claim, for excessive force, rests on allegations surrounding his 1995 and 1997 arrests. The applicable one-year statute of limitations bars the part of his claim resting on the 1995 arrest.32 However, due to statutory tolling, the limitations period does not bar the remainder of his claim, based on the 1997 arrest.

Guerrero was in prison from the date of his arrest in 1997 until August 1999. The limitations period for claims based on the 1997 incident thus began running upon his release,33 and ended in August of 2000. Because he filed this lawsuit in June of 2000, then, the part of his claim resting on the 1997 incident is timely. Accordingly, we reverse the district court's dismissal of the part of Guerrero's § 1983 claim resting on the 1997 incident.

The part of Guerrero's claim that rests on the 1995 incident is not timely. Thus, we affirm the district court's dismissal of that portion. Guerrero does not assert that he was imprisoned at any time during the year after that incident. Accordingly, § 352.1 does not apply. Moreover, neither equitable tolling nor equitable estoppel apply. California allows equitable tolling of the statute of limitations when a plaintiff, "possessing several legal remedies . . ., reasonably and in good faith, pursues one designed to lessen the extent of his injuries or damage," thereby allowing the statutory period to run.34 A plaintiff whose ignorance of the statutory period is excusable may file a lawsuit outside that period as long as he causes no prejudice to the defendants by doing so.35

In this case, Guerrero did not pursue his claims in any manner until he filed this lawsuit in June 2000. Neither did he provide advance notice of his claims to the 231 defendants prior to filing this suit. Thus, Defendants had no timely warning of Guerrero's allegations, and allowing this part of his lawsuit to proceed would prejudice the defendants.36 Further, Guerrero does not claim to have been ignorant of the applicable statute of limitations period.37 Accordingly, California's equitable tolling principles do not apply.

Similarly, equitable estoppel does not apply. Equitable estoppel, also termed fraudulent concealment, halts the statute of limitations when there is "active conduct by a defendant, above and beyond the wrongdoing upon which the plaintiff's claim is filed, to prevent the plaintiff from suing in time."38 The plaintiff must demonstrate that he relied on the defendant's misconduct in failing to file in a timely manner and "must plead with particularity the facts which give rise to the claim of fraudulent concealment."39

The facts of this case do not justify equitable estoppel. Even assuming that Guerrero's allegations of a conspiracy are true, the defendants did not engage in any fraudulent conduct "above and beyond the wrongdoing upon which the plaintiff's claim is filed."40 Guerrero has failed to plead with particularity any additional fraudulent behavior on the part of the defendants that would excuse his delay in bringing this suit. Equitable estoppel therefore does not save that portion of Guerrero's excessive force claim based on the 1995 arrest from the statute of limitations. Accordingly, because Guerrero failed to file this lawsuit within the statute of limitations and has not offered a valid excuse for this failure, the statute of limitations bars half of his § 1983 excessive force claim.

C. Guerrero Has Standing to Bring RICO Claims

Guerrero asserts claims under RICO, alleging injury due to lost employment prospects during his alleged wrongful incarceration. RICO forbids enterprises from engaging in "racketeering activity," including "any act or threat involving murder, kidnapping, gambling, arson, robbery, bribery, extortion, dealing in obscene matter, or dealing in a controlled substance."41 An individual may bring a civil claim under RICO if he has been "injured in his business or property by reason of a violation" of the statute.42 To recover under RICO, the individual "must show proof of concrete financial loss"43 and must demonstrate that the racketeering activity proximately caused the loss.44

Recently, in Diaz v. Gates,45 we held that a plaintiff who claimed that he was "rendered unable to pursue gainful employment while defending himself against unjust charges and while unjustly incarcerated,"46 adequately alleged an injury to business or property under RICO.47 Guerrero's complaint mirrors that of the complaint in Diaz. Guerrero alleged that he was "unable to pursue gainful employment while defending [himself] against unjust charges and/or while unjustly incarcerated" and that he "suffered a material diminishment of [his] employment prospects by virtue of the unjust and unconstitutional conviction[ ]." Under Diaz, Guerrero's alleged harm amounts to intentional interference with contract and interference with prospective business relations, which are torts under California law that constitute injury to business or property under RICO.48 Therefore, Guerrero adequately pleaded the injury to business or property required to establish standing under RICO. Thus, we reverse and remand the district court's dismissal of Guerrero's RICO claims for lack of standing.

We affirm the district court's grant of the defendants' motions to dismiss under Federal Rule of Civil Procedure 12(b)(6) as to all but one half of one of Guerrero's § 1983 claims. We reverse as to that part of Guerrero's claim for excessive force resting on the 1997 incident. We also reverse the district court's dismissal of Guerrero's RICO claims for lack of standing. We remand for further proceedings consistent with this opinion.

AFFIRMED IN PART; REVERSED AND REMANDED IN PART.

No costs allowed.