Will Europol be notified that I filed an EDPS complaint, and could this affect my case?

Yes, Europol is notified and invited to respond to your complaint. This is a formal administrative process, not anonymous. However, filing a complaint cannot lawfully prejudice your position — the EDPS monitors for any retaliatory data processing. In practice, filing often prompts Europol to review its files more carefully, occasionally resulting in voluntary corrections before the EDPS issues a decision. If you are concerned about sensitive ongoing proceedings, the timing and framing of the complaint can be strategically managed to minimise any perceived adverse signalling.