Only an “interested party” can bring a GAO bid protest. This generally means that a protester must be “an actual or prospective bidder or offeror” with a “direct economic interest” in the contract’s award.
Source: Get Your Novation Before Filing a Bid Protest with GAO – SmallGovCon
SBA Updates All Small Mentor-Protege Template with Affiliation Questions
With little fanfare, the SBA has updated the template for agreements under the All Small Mentor-Protégé