Moderna, a biotech advancing one of the leading COVID-19 vaccine candidates, has faced questions for several months over its patents and intellectual property. Responding to investor questions, the company now says it won’t enforce its vaccine patents against other companies during the pandemic.

In a Wall Street Journal interview, company President Stephen Hoge said Moderna is “quite studiously not asserting infringement.” Without naming names, the biotech says other COVID-19 vaccines in development might be using Moderna-patented technology.