This continuous survey (The Clinical Trials Implementation Monitor (or “CTiMonitor”) aims to build knowledge on how the implementation of the Clinical Trials Regulation (CTR), (EU) No. 536/2014 is progressing in different European countries. This information is of interest to various stakeholders including Pharmaceutical Industry Regulators, the Commission and national Ministries. Surveys are sent to the EFPIA National Trade Associations (NTAs) Regulatory Network. This, the fourth survey, covers the Q3/2015 period. Results have already been collected for Q4/2014, Q1/2015 and Q2 2015. In 2016, the survey will be repeated every half a year and consist of e.g. more detailed questions on national pilots and assessment arrangements.