One of the things I particularly like about the FedCircuitBlog is the page dedicated to en banc Federal Circuit cases. It makes it very easy to see what the Federal Circuit has been focusing its attention on. Apparently, over the past few years that focus of attention has been on veterans cases. You have to go all the way back to 2018 in Click-to-Call v. Ingenio to find a Federal Circuit en banc decision on patent law. The Federal Circuit granted en banc review in another veterans case just last month in Taylor v. McDonough — its fifth veterans en banc case since 2018.
I guess it makes sense, patent law is already very clear. 😉