The price of Wegovy, Novo Nordisk’s blockbuster weight-loss drug, is $1,349 a month in the U.S.; in Germany, it’s $328. The U.S. price for Keytruda, a cancer treatment, is $191,000 a year; in Japan, ...

Feldman and Schor explain that the patent dance is a complex process to determine which of a biologic manufacturer’s patents ...