When he and his wife divorced, the company became involved in a protracted lawsuit because another drug company had filched its technology. But in the end, Chang gained a patent and forced the other company to pay up in an out-of-court settlement.
在他與前妻婚變時，藥廠也因技術被竊取而與其他藥廠纏訟多年，最後才因張子文拿到專利而迫使對方付錢和解。