1. This Regulation applies to the processing of personal data by all Union institutions and bodies.
2. Only Article 3 and Chapter IX of this Regulation shall apply to the processing of operational personal data by Union bodies, offices and agencies when carrying out activities which fall within the scope of Chapter 4 or Chapter 5 of Title V of Part Three TFEU.
3. This Regulation shall not apply to the processing of operational personal data by Europol and the European Public Prosecutor's Office, until Regulation (EU) 2016/794 of the European Parliament and of the Council [Regulation (EU) 2016/794 of the European Parliament and of the Council of 11 May 2016 on the European Union Agency for Law Enforcement Cooperation (Europol) and replacing and repealing Council Decisions 2009/371/JHA, 2009/934/JHA, 2009/935/JHA, 2009/936/JHA and 2009/968/JHA (OJ L 135, 24.5.2016, p. 53).] and Council Regulation (EU) 2017/1939 [Council Regulation (EU) 2017/1939 of 12 October 2017 implementing enhanced c
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