Bridges and West prevailed over claims that the song "Stand Up" copied from the work of a group of New Jersey musicians.

In 2018, Castel sentenced Tucker to a term of imprisonment of sixteen years and eight months.

In 2021, Castel sentenced Hernandez to a term of imprisonment of life plus thirty years.

[13] In re: Google Digital Advertising Antitrust Litigation, 21-md-3010: In 2021, Castel was assigned to preside over a group of civil actions alleging that Google's advertising auctions violated the Sherman Antitrust Act.

[14] Mata v. Avianca, Inc., 22-cv-1461 (PKC): In a June 2023 decision, Castel dismissed the personal injury case against the airline Avianca and issued a $5,000 fine to two lawyers representing the plaintiff, who had submitted fake precedents generated by ChatGPT in their briefs.

He noted numerous inconsistencies in the opinion summaries, describing one of the cases' legal analysis as "gibberish".