How many applications can one person or company volunteer for this pilot?

USPTO will accept no more than 25 total written consents (corresponding to 25 total separate applications) from an Applicant, Applicant's assignee (to include subsidiaries), or Applicant's affiliates. Patent applications that participate in the peer review process, but are not granted advancement of examination for any reason will not be counted against the 25 total for any one applicant.

USPTO FAQ - Questions and Answers (04AUG2008)