This is a relatively rare instance in which a so-called use patent stands up to legal scrutiny. It must have helped PFE’s case considerably that the ED utility of sildenafil was discovered by accident.
The new higher hurdle for showing inequitable conduct (#msg-63573604) presumably worked to PFE’s advantage too.
“The efficient-market hypothesis may be the foremost piece of B.S. ever promulgated in any area of human knowledge!”