Mark Robinson had decades of experience suing automobile manufacturers when he got the lead role in hundreds of suits arising from Toyota Motor Corp.’s sudden-acceleration defect recalls. But the litigation turned into one of the ­biggest fights of his career.

“It was 24/7. It really was,” he said of the litigation, which wrapped up in 2013 with a settlement of hundreds of personal-injury and wrongful-death suits. “I’ve had all kinds of cases and verdicts, long trials, and I don’t think I’ve ever had anything like that period on Toyota.”