"Although the legislative switch to a "first-to-file" system invokes the idea of eliminating priority contests between two competing inventors, some proponents of first-to-file systems are actually asking for a more expansive absolute novelty system.You can access the survey here.
Switching the US to an absolute novelty system would have three primary disruptive components: (1) ending interferences and other priority contests; (2) ending the ability for patentees to avoid putative prior art by proving an earlier invention date; and (3) ending the grace period for an inventor's own prior disclosures. These changes would impact the law as applied both in prosecution and litigation.
In this survey, I am hoping to get a sense of the relative importance of these changes. The survey should take only about five minutes to complete".
The race to the Patent Office here