Case C-623/19 P: Judgment of the Court (Sixth Chamber) of 17 September 2020 — Alfamicro — Sistemas de computadores, Sociedade Unipessoal, Lda v European Commission (Appeal — Action for annulment — Decision to recover a debt — Enforcement order — Principle of res judicata — Adoption of a decision which is enforceable within the meaning of Article 299 TFEU for the recovery of grants awarded under a contract — Grant agreement concluded under the Competitiveness and Innovation Framework Programme (CIP) (2007-2013))