Unreported / Non-Citable
Background
Anthony David Martin was charged in November 2020 with murdering his girlfriend, along with firearm enhancements and an assault-weapon possession count. A jury acquitted him of first degree murder but convicted him of second degree murder and unlawful possession of an assault weapon and found the enhancements true; he received 42 years to life. That judgment was reversed for a jury-selection error under Code of Civil Procedure section 231.7. Back in the trial court just before retrial, the prosecution moved to amend the information, and during the initial days of trial Martin entered a plea bargain: guilty pleas to second degree murder and assault-weapon possession plus an admitted personal-use firearm enhancement, in exchange for withdrawal of the amended information and a stipulated 22-years-to-life sentence — 15 years to life for murder, a four-year middle term for the enhancement, and a three-year upper term for the possession count.
In pleading guilty, Martin waived his right to appeal, including his sentence. At sentencing the court noted he had agreed to the aggravated upper term on the possession count but questioned whether he had admitted any aggravating factor. The prosecutor identified one — that Martin had built the assault rifle himself, reflecting planning and sophistication — and Martin personally stipulated to it. The court imposed the stipulated sentence. Martin then appealed the upper term as unauthorized under section 1170, subdivision (b)(2); his notice of appeal requested a certificate of probable cause, which the trial court denied.
The Court’s Holding
The Fifth District agreed with the People and dismissed the appeal. Under section 1237.5, an appeal after a guilty plea requires a certificate of probable cause unless it concerns post-plea matters that do not affect the plea's validity. Under People v. Panizzon, the crucial inquiry is the substance of the challenge. Because Martin attacked the lawfulness of the very sentence he negotiated as an integral part of the plea bargain, his claim was in substance a challenge to the validity of the plea, triggering the certificate requirement. The court distinguished People v. Buttram and People v. French, where no certificate was needed because the agreements reserved sentencing discretion within a maximum term; here the parties negotiated a specific stipulated sentence and left the trial court no discretion.
The court also rejected Martin's reliance on People v. Allison and on People v. Stamps and People v. Mitchell. Stamps and Mitchell permit appeals without a certificate where the defendant seeks the benefit of an intervening change in law, but section 1170, subdivision (b)(2) was amended effective January 1, 2022 — about three years before Martin's February 2025 plea — so his claim was that the plea was defective when made, not that it became defective later. A footnote added that Martin's personal stipulation to the aggravating factor undermined his claim on the merits. Because he failed to obtain a certificate of probable cause, the appeal was dismissed.
Key Takeaways
- A challenge to a specific stipulated sentence negotiated in a plea bargain is in substance an attack on the plea's validity and requires a certificate of probable cause under section 1237.5.
- The substance of the appellate claim, not its timing or framing, controls whether the certificate requirement applies.
- Where the plea fixes a stipulated sentence rather than reserving judicial discretion within a maximum term, the Buttram and French exceptions do not apply.
- The Stamps and Mitchell intervening-change exception is unavailable when the statutory amendment predated the plea by years.
- A defendant's personal stipulation to an aggravating factor at sentencing can undermine an upper-term challenge on the merits.
Why It Matters
The opinion reinforces the line between attacks on negotiated stipulated sentences, which require a certificate of probable cause, and challenges to discretionary sentencing choices reserved by a plea agreement, which do not. It also forecloses the argument that a defendant who pleads after a sentencing statute is amended can recast a plea-validity challenge as a claim for the benefit of an intervening change in law.
For practitioners, the decision underscores preserving appellate rights at the plea stage: a defendant who agrees to a fixed term and personally stipulates to aggravating factors faces both a procedural bar and a weakened merits position when later contesting that term.