1 min to read News Posted on May 30, 2023 Pfizer's Heading for a Patent Cliff. Is the Stock Still a Buy? – The Motley Fool Pfizer's Heading for a Patent Cliff. Is the Stock Still a Buy? the motley fool Source: Pfizer's Heading for a Patent Cliff. Is the Stock Still a Buy? – The Motley Fool share tweet share Tags: SPACs