Professor William B. Rubenstein writes about civil litigation and teaches a variety of courses about adjudication including Civil Procedure, Advanced Civil Procedure, Complex Litigation, and Remedies. Prof. Rubenstein's work emphasizes class action law: he litigated in the field for nearly a decade before becoming a law professor. He currently is the sole author of Newberg on Class Actions, the leading national treatise on class action law.

Prof. Rubenstein regularly provides expert witness and consulting services to attorneys involved in complex procedural matters.

After graduating from Yale College (magna cum laude, 1982) and Harvard Law School (magna cum laude, 1986), Prof. Rubenstein clerked for Hon. Stanley Sporkin. From 1987-1995, he worked at the national office of the ACLU litigating complex civil rights cases. Before joining the Harvard Law School faculty in 2007, Prof. Rubenstein taught for a decade at UCLA Law School. He is a member of the bars of Massachusetts, California, Pennsylvania (inactive), DC, the US Supreme Court, and numerous federal circuit and district courts.