About Robert
Robert Zimmer is admitted to practice in Texas and holds federal admissions to the U.S. District Court for the Western District of Texas and the U.S. Court of Appeals for the Fifth Circuit. He works in both trial and appellate settings. His admissions shape the kinds of matters he handles and the courts where he appears.
Early in his career he served as a law clerk at the ACLU of Southern California from 2013 to 2014. In that role he supported litigation and conducted research on civil liberties matters. The experience gave him direct exposure to constitutional issues, motion practice, and the preparation of legal memoranda for litigators handling public-interest cases.
After his clerkship, Zimmer continued his legal work in Texas courts and federal courts that hear appeals from the state. He has practical experience suited to cases that must move between trial-level proceedings and appellate review. His admissions to the Western District of Texas and the Fifth Circuit enable him to file and argue matters at those levels when a client’s case requires federal court intervention or appellate briefing.
Colleagues describe him as methodical in the courtroom and in written advocacy. He has handled procedural matters and drafted pleadings and briefs that respond to complex factual records. He practices the sorts of courtroom tasks that most litigation matters require: preparing motions, responding to discovery disputes, and assembling records for appeal. Those acquainted with his work note an emphasis on clarity in both written and oral advocacy.
Zimmer’s experience at a public-interest organization early in his career informs the way he approaches constitutional and civil-rights questions when they arise in private practice. He is familiar with the research and briefing demands that accompany constitutional claims and federal statutory issues. That background complements work that must conform to both state procedural rules and federal standards of review.
As of 2026 he continues to practice in Texas, appearing in state courts as well as in the U.S. District Court for the Western District of Texas and the Fifth Circuit. He handles litigation matters that require representation at the trial level and on appeal in federal and state courts across the region.
