Atty. P. Derek "Derek" Petersen
P. Derek Petersen is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Environmental.
Profile Summary
About P. Derek "Derek" Petersen at a glance
P. Derek "Derek" Petersen is a litigation attorney based in Phoenix, Arizona, practicing at Perkins Coie LLP. Educated at Arizona State University (J.D., 2007). Recognitions include Best Lawyers in America — Litigation - Environmental (2026), Best Lawyers in America — Additional Areas of Practice: (2026), and Best Lawyers in America — Commercial Litigation (2026). Serands clients in Phoenix, AZ and the surrounding metropolitan area.
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About
- P. Derek Petersen is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Environmental
- P. Derek, who practices law in Phoenix, Arizona, has been recognized since 2018
- This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which P. Derek is held by other top lawyers in the same geographic and legal practice area
Practice Areas Explained
P. Derek "Derek" Petersen's Areas of Practice
Each practice area below reflects the types of cases P. Derek "Derek" Petersen handles, with a brief overview of what that area of law covers.
Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.
P. Derek "Derek" Petersen is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in Arizona →
Jurisdictional Context
Why local counsel matters in Arizona
Practicing law in Arizona. Legal matters in Arizona are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Phoenix are typically filed in the local municipal court or the appropriate Arizona state district court, depending on subject matter and amount in controversy. An attorney licensed in Arizona brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Arizona courts without local counsel or pro hac vice admission.
Looking for additional Arizona attorneys? Browse all attorneys in Phoenix or all attorneys in Arizona.
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