[Michael S. Sinha, Sven Bostyn, and Timo Minssen] Abstract: ... This chapter addresses exclusivity issues, with a particular emphasis on regulatory exclusivities for vaccines and therapeutics. We begin with a basic overview of the current regulatory exclusivity landscape in Europe and the US, followed by a discussion of current developments in COVID-19 vaccines and therapeutics. Next, we describe the influence of these technological developments on debates surrounding regulatory exclusivities while describing their relationship to other forms of exclusivities. From these assessments, we draw some lessons for market exclusivity, innovation, and access during the COVID-19 pandemic and beyond.