We Fight Criminal Appeals and Writs
Mason Appellate Law focuses exclusively on California criminal appeals, writs of habeas corpus, motions under California's new laws, and federal post-conviction relief. Call for a ConsultationWhy Choose Mason Appellate Law
Dedicated to Difficult Cases
Post-conviction work is hard to win. We take on the cases other firms turn away and litigate them relentlessly.
Experienced in Post-Conviction Relief
Direct appeals, state habeas corpus, resentencing under California's new laws — SB 1437, SB 483, AB 333, the Racial Justice Act — and federal habeas corpus under 28 U.S.C. § 2254.
Fearless in Challenging the Government
We are not afraid to challenge the state and defend people who have been steamrolled by the system.
Practice Areas
- Criminal Appeals
- Writs of Habeas Corpus
- Felony-Murder Resentencing (SB 1437 / PC § 1172.6)
- Racial Justice Act Claims (AB 2542, AB 256)
- Enhancement Relief (SB 483, AB 333, SB 81)
- Federal Habeas Corpus (28 U.S.C. § 2254)
- Ineffective Assistance of Counsel Claims
- Innocence Claims (SB 97)
Meet Our Founder
Kristen J. Mason
Founding AttorneyKristen Mason founded Mason Appellate Law with a practice devoted exclusively to criminal appeals: direct appeals, petitions for writs of habeas corpus, and post-conviction relief in state and federal courts throughout California. A former trial attorney who has always practiced on the defense side, she has built a reputation for effective appellate advocacy rooted in a thorough command of California's new sentencing and conviction-review laws — SB 1437, AB 333, SB 483, and the Racial Justice Act. She was recognized as a Super Lawyers Rising Star from 2024 through 2026.
