Judgment of the Court of 13 September 2001 in Case C-89/99 (reference for a preliminary ruling from the Hoge Raad der Nederlanden): Schieving-Nijstad vof and Others v Robert Groeneveld (Agreement establishing the World Trade Organisation — Article 50(6) of the TRIPs Agreement — Interpretation — Direct effect — Application to proceedings pending at the time of entry into force in the State concerned — Conditions regarding the time-limit for bringing substantive proceedings — Calculation of that time-limit)