Not an interested party if you aren't on the QPL
Protestor challenged a $1.3 billion sole-source contract by the Forest Service. GAO found, however, the protestor was not an interested party because it didn't (yet) sell a product that was on the qualified product list. Protest dismissed.
GAO: Coulson Aviation USA, Inc., B-423952,B-423952.3 (Feb 04, 2026)