Challenge to Retroactive Application of Professional Qualification Regulations

A claimant challenged a decision by a public entity regarding the retroactive application of a new set of regulations concerning the qualification requirements for a specific professional status, arguing the application violated principles of legal certainty and non-retroactivity. The court dismissed the application for interim relief, finding that the claimant had not demonstrated a sufficiently serious doubt regarding the legality of the contested administrative act, as the new regulations were explicitly stated to apply to all ongoing qualification processes, and the urgency criteria for suspending the application were not met pending the final ruling on the merits.