Feb 21, 2013 Adopted APPENDIX TO CHAPTERS 1 TO 17A-COLORADO RULES OF CIVIL PROCEDUREAmended Form 20. Pattern Interrogatories Under Rule 13.Amended and Adopted by the Court, En Banc, February 21, 2013, effective immediately. Rule_Change_2013-02.pdf (PDF, 102.04 KB)