A top research executive for leading drugmaker Lupin Inc. resigned in August 2021, citing a move from the U.S. to China to care for his aging parents — but on his final day, he accessed his laptop at 6:33 p.m., copied 128 company files and walked out the door.

Those files are at the heart of a lawsuit Lupin filed in 2023 against Xian-Ming Zeng and the competitor he went on to found, Transpire. Lupin, an Indian company with U.S. pharmaceutical sales and marketing headquarters in Baltimore, accused its former employee of misappropriation of trade secrets in a case that’s headed to trial in federal court in Florida.

Sunrise, Florida-based Transpire fired back in August, accusing Lupin in a separate lawsuit of stealing trade secrets, likewise related to generic inhalers for asthma and other

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