Patents, prices and court files: How ICIJ used data to investigate an industry that thrives on secrecy

ICIJ investigated how Merck & Co. and other pharmaceutical companies used a dense web of patents to extend market exclusivity for Keytruda, a cancer drug, delaying affordable alternatives and keeping prices high. The analysis revealed strategies like patenting minor drug modifications and combinations to reset exclusivity periods, while price variations and lawsuits in Latin America highlighted patient struggles.