The patent is clearly from the Israeli program with Raytheon to develop a laser adjunct to their Iron Dome air defense system.

They have existed in one form or another for half a century (been there, done that). But there is no evidence for space-based DEWs, including circumstantial. And there is a very good reason for that: in the 1980s, we found early in the game that space-based lasers worth the money were too big and had poor duration. Just a gigantic technical and operational headache. We used an airborne laser in 2010 to shoot down a boosting ballistic missile, but Obama killed the program and scrapped the system.