Benjamin E. Lowenthal has filed briefs in more than 75 appellate cases, argued before the Hawaii Supreme Court consistently since 2009, and has been lead appellate counsel in 25 precedent-setting published cases. Here are some of his successful appellate cases:
- State v. Higheagle - successfully defended exclusion of driver's blood-alcohol level in habitual drunk driving case based on violations of implied consent laws committed by the police.
- Salayes-Araiza v. State - won the right to present evidence for noncitizen seeking to set aside her criminal conviction based on violations of the constitutional right to effective assistance of counsel.
- State v. Abion - overturned conviction and got a new trial for a mentally impaired defendant with history of substance abuse issues based on constitutional right to present complete defense.
- In re: T.M. - established constitutional right to an attorney for a young mother facing termination of her parental rights.
- State v. Russo - overturned conviction for a journalist recording police operations in the public based on the First Amendment's freedom of the press.
- State v. Garcia - set aside 20-year sentence for client after the prosecution breached the plea agreement before sentencing.
- People of Guam v. Santos - set aside convictions of bribery and first-degree sexual assault based on violations of Double Jeopardy rights and territorial statutory violations .
- State v. Barrios - overturned 100-year sentence for the lower court's statutory violations and judicial indiscretion.
- State v. Anderson - won a new trial when appellate court ruled that the police violated client's Miranda rights and the lower court refused to let him present evidence supporting his defense.