A bold courtroom gamble paid off for Gibson, Dunn & Crutcher when the firm’s intellectual property lawyers last year scored a resounding win for T-Mobile USA Inc. — one in a series of recent patent litigation victories for the 100-plus lawyer group.

T-Mobile was sued by RealTime Data LLC for infringement in the plaintiff-friendly U.S. District Court for the Eastern District of Texas. The other defendants, including AT&T Inc. and Sprint Corp., settled, leaving T-Mobile on the hook for up to $256 million. Following a series of ominous pretrial rulings, T-Mobile tapped Gibson Dunn to take over just two months before trial (SNR Denton stayed on as co-counsel).