Patent pledges are voluntary commitments made by patent holders without monetary compensation to refrain from asserting their patent rights to the fullest degree. Such pledges have been around for decades and appear in industries ranging from software to automotive to green tech to biotech... Since the beginning of the COVID-19 pandemic in early 2020, firms and institutions around the world have pledged patents and other intellectual property rights to assist with the pandemic response. These efforts include unilateral pledges such as those made by ventilator manufacturer Medtronic and vaccine maker Moderna as well as coordinated pledge efforts such as the Open COVID Pledge and the Japan-based Open COVID-19 Declaration.