These are the patents associated with the New Drug Application number(s) below. Click a Patent Number to be taken to the patent documents. NDA #21540 Patent(s) 4572909 4681893 4879303 5273995 5686104 5969156 6126971 6455574 RE40667 Share this: Click to share on X (Opens in new window) X Click to share on LinkedIn (Opens in new window) LinkedIn Click to share on Facebook (Opens in new window) Facebook Click to share on Pocket (Opens in new window) Pocket Click to share on Reddit (Opens in new window) Reddit