You might recall that in Ex Parte Poisson the PTAB reversed an examiner who had not provided evidence that a claim recited a purported abstract idea. Namely, in Ex Parte Poisson, the PTAB wrote:
The Public Pair site shows that the patent application was subsequently allowed without any further argument from the Office:
The patent issued as US Patent 9,114,310.
In the most recent round of comments submitted with respect to the 101 guidelines, many groups and individuals call for a requirement that an examiner support an assertion of an abstract idea with evidence. [Link]