Answer given by Ms Malmström on behalf of the Commission
Following the adoption by the Council of the decisions on the signature and provisional application of EU-Canada Comprehensive Economic and Trade Agreement (CETA) and the signature of the Agreement at the EU-Canada Summit of 30 October 2016, the European Parliament has now given its consent. Both the Commission and the Council have confirmed that, in line with past precedents of other EU Free Trade Agreements (FTAs), CETA will be provisionally applied after the European Parliament has given its consent.
Provisional application of mixed FTAs allows EU citizens entrepreneurs and companies to promptly benefit from the opportunities trade agreements offer. For instance, national ratification of the EU-Korea FTA took over 4 years. During this period the agreement was provisionally applied which allowed EU exports to South Korea to grow by 55%. The EU's EUR 7.6 billion trade deficit with Korea prior to the FTA turned into a surplus of EUR 7.3 billion.
Since CETA was adopted by the Council as a mixed agreement, it can only enter into force fully and definitively when all EU Member States have ratified the Agreement in line with their national procedures. As highlighted in the Council Declaration accompanying CETA, if the ratification of CETA fails permanently and definitively in a Member State because of a ruling of a constitutional court, or following the completion of other constitutional processes, provisional application must be and will be terminated. A Member State can trigger a process to terminate provisional application. However, it should be stressed that a decision of the EU institutions can only be reversed by the same EU institutions.
-  http://www.consilium.europa.eu/en/press/press-releases/2016/10/28-eu-canada-trade-agreement/