CRIMINAL DEFENSE PROCESS LAW — CALIFORNIA
Pre-Trial Motions in California Criminal Cases — Suppression and Dismissal
Pre-trial motions can suppress illegally obtained evidence, dismiss charges for constitutional violations, and dramatically improve the defense's position before trial even begins. The most powerful is the PC §1538.5 motion to suppress.
Reviewed by Daniel S. Rubin, CA Bar 302093 · Los Angeles Criminal Defense Attorney
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Pre-Trial Motions California — At a Glance
- Law / Code
- PC §1538.5 / PC §995 / PC §1382
- Classification
- Criminal Procedure — Pre-Trial
- Maximum Penalty
- N/A — procedural motions
- Probation Eligible
- N/A
- Strike Offense
- N/A
- Related Codes
- PC §1538.5PC §995PC §1382PC §1385
What Is Pre-Trial Motions California Under California Law?
Legal Framework. A pre-trial motion is a request asking the criminal court to decide a legal issue before trial rather than leaving it to the jury. In California, the principal suppression procedure is Penal Code § 1538.5. It allows a defendant to seek return of property or suppression of evidence obtained through an unreasonable search or seizure under the Fourth Amendment and article I, section 13 of the California Constitution. The prosecution must establish the legality of a warrantless search or seizure; where officers relied on a warrant, the defense can challenge the warrant, its execution, or whether an exception to the warrant requirement applied. A successful ruling can exclude drugs, weapons, statements derived from an unlawful detention, photographs, digital evidence, and other evidence the prosecution needs to prove its case.
The Prosecution's Burden. The available motions and timing depend on the court, the charging document, and whether the case is a misdemeanor or felony. A felony defendant may move under Penal Code § 995 to set aside an information after a preliminary hearing when the defendant was committed without reasonable or probable cause, or when the defendant was denied a substantial right at the preliminary examination. Penal Code § 995a separately permits the prosecution to challenge an order dismissing a felony complaint at preliminary hearing. A speedy-trial dismissal motion under Penal Code § 1382 addresses statutory trial deadlines, generally 30 days after arraignment or plea for an in-custody misdemeanor, 45 days for an out-of-custody misdemeanor, and 60 days after arraignment on an information or indictment in a felony case, subject to valid waivers, exclusions, and good cause.
Potential Consequences. Pre-trial motion practice is broader than suppression and dismissal. Common litigation includes motions to compel discovery under Penal Code § 1054.5, requests for discovery of peace-officer personnel records under Evidence Code §§ 1043 and 1045, motions to exclude prejudicial evidence under Evidence Code § 352, challenges to the admissibility of confessions or identifications, and motions regarding prior convictions or other-acts evidence. In Los Angeles County, motion procedures, filing deadlines, and hearing calendars can vary by courthouse and judicial department, but constitutional and statutory requirements do not. Prosecutors from the Los Angeles County District Attorney’s Office, LAPD or LASD reports, body-worn-camera recordings, dispatch records, and forensic materials may all become central to a well-supported motion.
05 — Defense Strategies
How Rubin Law Defends Pre-Trial Motions California Charges
Rubin Law, P.C. attacks the elements of PC §1538.5 / PC §995 / PC §1382 and drives outcomes that avoid conviction where possible.
Attack the Detention or Traffic Stop
A Penal Code § 1538.5 motion can challenge the police contact at its first constitutional stage. An officer may not detain a person merely on a hunch; the detention must be supported by specific, articulable facts creating reasonable suspicion of criminal activity. A traffic stop likewise requires at least reasonable suspicion of a Vehicle Code violation or other offense. The defense examines body-worn camera footage, radio traffic, CAD logs, reports, and the officer’s stated observations to determine whether the asserted basis existed before the stop. If the stop was unlawful, evidence discovered as its product—including contraband, admissions, and observations—may be excluded unless the prosecution proves an intervening exception.
U.S. Const. amend. IV
Challenge the Scope of a Search
Even a lawful stop or arrest does not authorize every subsequent search. The defense can argue that officers exceeded the permitted scope of a frisk, vehicle search, probation search, consent search, or search incident to arrest. A protective patdown is limited to a search for weapons when facts support a reasonable belief that the person is armed and dangerous; it is not a general evidence search. Consent must be voluntary, and its scope is measured by what a reasonable person would have understood was authorized. In digital-device cases, a valid seizure of a phone does not automatically permit a forensic search of its contents. A scope ruling can suppress the most damaging physical or electronic evidence.
17 CCR §1219.3
Litigate Warrant Defects and Execution
When the prosecution relies on a search warrant, the defense can test whether the affidavit established probable cause, whether it was stale or materially misleading, and whether the warrant particularly described the place and items to be searched. A defendant may seek a hearing under Franks v. Delaware when there is a substantial preliminary showing that an affiant deliberately or recklessly included a false statement or omitted material information necessary to probable cause. The manner of execution also matters: officers must generally remain within the warrant’s terms and comply with statutory and constitutional requirements. If the warrant is invalid or improperly executed, Penal Code § 1538.5 provides the mechanism to seek exclusion.
NHTSA SFST
Set Aside a Defective Felony Information
After a felony preliminary hearing, Penal Code § 995 permits a motion to set aside the information when the magistrate held the defendant to answer without reasonable or probable cause or denied a substantial right. This is not a second trial of credibility; it focuses on whether the preliminary-hearing record supplies a legally sufficient basis for each charge and whether an error was substantial. Examples include a commitment based on evidence that cannot support an essential element, denial of meaningful cross-examination, improper restriction of defense evidence, or proceeding without required procedural protections. A successful § 995 motion can remove unsupported counts, narrow allegations, or require the prosecution to reconsider its charging theory.
VC §23152
Enforce Statutory Speedy-Trial Deadlines
Penal Code § 1382 requires dismissal when the prosecution does not bring a case to trial within the applicable statutory period, absent a valid waiver, an authorized period of exclusion, or good cause. The calculation requires careful review of the arraignment date, each continuance, custody status, defense requests, court congestion claims, and any express or implied time waiver. In a felony case, the usual period is 60 days from arraignment on the information or indictment; misdemeanor periods differ depending on whether the defendant is in custody. A defense lawyer should object promptly when the People seek an unjustified continuance. Where no valid basis exists to extend time, dismissal under § 1382 can be mandatory.
17 CCR §1219.1
Exclude Unfair or Unreliable Trial Evidence
A strong pre-trial evidentiary motion can limit the prosecution’s presentation even when suppression is not available. Evidence Code § 352 authorizes exclusion when probative value is substantially outweighed by the probability of undue prejudice, confusing the issues, misleading the jury, or consuming undue time. This is particularly important for inflammatory photographs, marginally relevant prior conduct, cumulative evidence, and evidence likely to invite a verdict based on emotion rather than proof. Separate constitutional objections may apply to involuntary statements, unreliable identifications, or testimonial hearsay. Obtaining a ruling before jury selection helps define the trial issues, reduces surprise, and may improve leverage in negotiations with the assigned prosecutor.
VC §23103.5
Constitutional Sources: Fourth Amendment — U.S. Constitution
Questions
Frequently Asked — Pre-Trial Motions California
What is a PC § 1538.5 motion to suppress in California?
Penal Code § 1538.5 is California’s principal procedure for challenging evidence obtained through an unreasonable search or seizure. It can address an unlawful traffic stop, detention, arrest, frisk, home entry, vehicle search, search warrant, probation or parole search, or seizure of a digital device. The remedy is exclusion: the court may suppress the unlawfully obtained evidence and, in appropriate circumstances, evidence derived from it. The motion is decided by a judge, usually after an evidentiary hearing where officers may testify and recordings or reports may be introduced. It does not automatically dismiss the case, but dismissal often becomes likely when the suppressed evidence is essential to proving an element of the charged offense.
Can my case be dismissed if police searched me illegally?
Potentially, but the immediate remedy for an unlawful search is usually suppression under Penal Code § 1538.5, not an automatic dismissal. If the judge excludes drugs, a weapon, a phone extraction, a statement, or another key item, the prosecutor must decide whether sufficient admissible evidence remains. The prosecution may continue with independent evidence, reduce the charge, offer a resolution, or move to dismiss. If no evidence remains to establish an essential element, dismissal is the likely outcome. The prosecution can sometimes rely on an exception, such as valid consent, a lawful search incident to arrest, inevitable discovery, attenuation, or good-faith reliance on a warrant. The precise sequence of events and available video evidence matter greatly.
What is a PC § 995 motion, and when can it be filed?
Penal Code § 995 applies in felony cases after the defendant has been held to answer at a preliminary hearing and the prosecution files an information. It asks the superior court to set aside all or part of the information because the defendant was committed without reasonable or probable cause or was denied a substantial right at the preliminary examination. The motion must be made before entering a plea to the information, unless the court permits otherwise for good cause. A § 995 motion is not ordinarily available in a misdemeanor case because misdemeanors generally proceed by complaint without a preliminary hearing. It can be especially important where the magistrate allowed a charge to proceed despite insufficient evidence of a required element.
How long does California have to bring my criminal case to trial?
Under Penal Code § 1382, the usual misdemeanor deadline is 30 days after arraignment or plea when the defendant is in custody and 45 days when the defendant is out of custody. In a felony case, the usual deadline is 60 days after arraignment on an information or indictment. These are not absolute calendar rules. A defendant may waive time, and certain periods may be excluded or extended for good cause, including some defense-requested continuances and circumstances recognized by law. If the statutory period expires without a valid waiver, exclusion, or good cause, the court must generally dismiss on a timely defense motion. A separate constitutional speedy-trial claim may arise under the Sixth Amendment and California Constitution in appropriate cases.
Can I bring a motion to suppress after I already had a preliminary hearing?
Yes. In a felony case, Penal Code § 1538.5 permits suppression litigation at the preliminary hearing, and the defense may renew or litigate the motion in superior court after the information is filed under the statute’s procedures. The available scope and timing depend on what was raised before the magistrate, what evidence was presented, and whether the defendant had a full and fair opportunity to litigate the issue. In misdemeanor cases, the motion is generally heard in the trial court before trial. Deadlines can be short and local Los Angeles Superior Court departments may impose filing and briefing requirements. Counsel should obtain reports, video, warrant materials, and dispatch records early enough to identify the factual basis for the motion.
Do pre-trial motions only matter if the case goes to a jury trial?
No. Pre-trial motions often determine whether a case ever reaches a jury. Suppression under Penal Code § 1538.5 can remove evidence the prosecutor needs; a Penal Code § 995 motion can eliminate unsupported felony counts; and a Penal Code § 1382 motion can require dismissal when statutory speedy-trial protections were violated. Other motions can obtain discovery, challenge officer credibility through appropriate Pitchess procedures under Evidence Code §§ 1043 and 1045, or exclude prejudicial evidence under Evidence Code § 352. The resulting rulings can materially change plea negotiations, charging decisions, and exposure. In Los Angeles cases, early review of LAPD or LASD recordings and the procedural history is often essential. For a case-specific assessment, contact Rubin Law, P.C. at (213) 723-2337.
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