Law Offices of Roger H. Chien, APC - Rancho Cucamonga, CA

Strategic Criminal Defense and Trial Advocacy in Rancho Cucamonga

Facing criminal allegations can jeopardize your freedom, reputation, and livelihood. Situated at 8300 Utica Avenue, Unit #199 in Rancho Cucamonga, Law Offices of Roger H. Chien, APC delivers assertive courtroom defense across San Bernardino, Riverside, and Los Angeles counties. Principal attorney Roger H. Chien brings an extraordinary tactical advantage to the courtroom: over two decades of prior frontline law enforcement service as a police detective, patrol officer, and district attorney senior investigator. Because Attorney Chien knows firsthand how detectives collect evidence, conduct interrogations, and assemble prosecution files, he identifies procedural flaws and constitutional violations that other advocates overlook. When individuals seek to hire a criminal defense lawyer who will dismantle the state case, this practice offers fearless advocacy.

DUI, DWI, and Traffic Offense Defense

A driving under the influence arrest triggers severe penalties, including license suspension, hefty fines, and jail time. Serving as skilled dui/dwi defense lawyers and traffic ticket lawyers, Attorney Chien represents motorists confronting misdemeanor and felony DUI charges, chemical test refusals, and DMV administrative suspension hearings. The firm scrutinizes police stop validity, field sobriety test protocols, and breathalyzer maintenance logs to seek reduced charges or complete case dismissals. Motorists who need a lawyer to protect their driving privileges receive dedicated guidance at every stage.

Violent Crime Defense, Domestic Violence, and Restraining Orders

Allegations of violence require swift, strategic intervention. Acting as tenacious violent crime defense lawyers and domestic violence lawyers, the firm defends clients accused of assault, battery, domestic disputes, child endangerment, and serious felony offenses. Attorney Chien also assists clients in handling civil harassment and domestic violence restraining orders, preventing unjust protective orders that could separate parents from their children. The firm thoroughly investigates underlying motivations, gathers witness testimony, and exposes false accusations.

Federal Criminal Charges and White Collar Offenses

Federal prosecutions require sophisticated trial preparation. Admitted to practice before the United States District Court in the Central, Northern, Eastern, and Southern Districts of California, Attorney Chien represents individuals facing complex federal indictments. As experienced drug crime defense lawyers and theft and burglary defense lawyers, the practice handles cases involving federal narcotics conspiracy, wire fraud, identity theft, insurance fraud, and embezzlement. The firm works to prevent formal charges during pre-indictment investigations and negotiates favorable plea agreements when trial is not advantageous.

Distinct Advantages of Choosing Roger H. Chien

• Former Police Detective and DA Investigator: Deep insider understanding of police procedures and prosecution strategies.
• State and Federal Court Admissions: Extensive trial experience across California state courts and all four California federal districts.
• Multilingual Legal Support: Fluent legal representation available in English, Spanish, and Mandarin Chinese.
• Flexible Payment Options: Transparent flat fees, LawPay processing, and credit card financing plans.

Request Your Free Criminal Defense Consultation

If you or someone you care about has been arrested or is under investigation by law enforcement, early legal intervention is critical. Do not speak with police investigators without experienced legal counsel present. When you need to find an attorney who will aggressively safeguard your constitutional rights, contact Law Offices of Roger H. Chien, APC at (909) 966-5378 today to schedule your confidential, free consultation.