Colorado Motion to Dismiss
In Colorado you move to dismiss under C.R.C.P. 12(b) within 21 days, 35 if served out of state.
Introduction
In Colorado you challenge a complaint before answering by filing a motion to dismiss under C.R.C.P. 12(b). The rule patterns after the federal Rule 12(b) but uses Colorado's own numbering of the grounds. It lists six enumerated defenses: lack of jurisdiction over the subject matter, lack of jurisdiction over the person, insufficiency of process, insufficiency of service of process, failure to state a claim upon which relief can be granted, and failure to join a party under C.R.C.P. 19. The numbering surprises practitioners who expect the federal frame: in Colorado, failure to state a claim is 12(b)(5), not 12(b)(6), and subject-matter jurisdiction is 12(b)(1). C.R.C.P. 12(b) lets you raise these defenses by separate motion filed on or before the date the answer is due, so the motion stands in place of the answer within the C.R.C.P. 12(a) window: 21 days after the summons and complaint are served, or 35 days if you were served outside Colorado or by publication. Motion practice runs through C.R.C.P. 121 Section 1-15, which sets page limits keyed to the subsection and requires a proposed order. Missing the response window risks a default judgment. DocDraft drafts a Colorado-formatted motion to dismiss from your facts, with attorney review available before you file.
Key Things to Know
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Colorado's pre-answer challenge to a complaint is a motion to dismiss under C.R.C.P. 12(b). The rule allows the enumerated defenses to be made, at the pleader's option, by separate motion filed on or before the date the answer is due under C.R.C.P. 12(a).
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C.R.C.P. 12(b) lists six grounds with Colorado's distinctive numbering: (1) lack of jurisdiction over the subject matter; (2) lack of jurisdiction over the person; (3) insufficiency of process; (4) insufficiency of service of process; (5) failure to state a claim upon which relief can be granted; and (6) failure to join a party under C.R.C.P. 19. Note that failure to state a claim is 12(b)(5) here, not the federal 12(b)(6).
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A 12(b) motion is filed in place of the answer within the same window: 21 days after the summons and complaint are served, or 35 days if you were served outside Colorado or by publication, under C.R.C.P. 12(a). Filing the motion stands in place of the answer within that window.
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If the court denies the motion to dismiss, the case proceeds and you answer on the schedule the court sets. On a 12(b)(5) motion, if matters outside the pleading are presented to and not excluded by the court, the motion is treated as one for summary judgment and disposed of under C.R.C.P. 56.
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Colorado's duty-to-confer rule, C.R.C.P. 121 Section 1-15(8), generally requires moving counsel to confer with opposing counsel before filing a motion and to include a good-faith conferral certification. The treatment of a motion to dismiss is unsettled: the official committee comment to that subsection names a motion to dismiss as one where conferring would not be appropriate, so confer unless your motion is one the rule exempts, and check the current rule and include a certification stating whether and why no conference was held.
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The most common ground is failure to state a claim upon which relief can be granted, which Colorado numbers as 12(b)(5). Under C.R.C.P. 121 Section 1-15(1), a motion involving a contested issue of law is supported by legal authority incorporated into the motion itself and is not filed with a separate brief.
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You file the motion to dismiss with the clerk of the trial court named in the summons: County Court for civil claims up to $25,000, or District Court for claims over $25,000. Under C.R.C.P. 121 Section 1-15(10), each motion is accompanied by a proposed order submitted in editable format.
Key Decisions
Motion to Dismiss Requirements
The full name of the court and judicial district where the lawsuit was filed, exactly as it appears on the summons.
The plaintiff's and defendant's full legal names as listed in the complaint, with you named as the defendant.
The case or docket number assigned by the court, found on the summons and the complaint.
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Colorado Requirements for Motion to Dismiss
A C.R.C.P. 12(b) motion to dismiss is filed in place of the answer within the C.R.C.P. 12(a) window: 21 days after the summons and complaint are served, or 35 days if you were served outside Colorado or by publication. Filing the motion stands in place of the answer within that window.
C.R.C.P. 12(b) allows the enumerated defenses to be made, at the pleader's option, by separate motion filed on or before the date the answer or reply is due under C.R.C.P. 12(a). The motion is filed instead of an answer.
Select from the six grounds in C.R.C.P. 12(b): (1) lack of subject-matter jurisdiction; (2) lack of personal jurisdiction; (3) insufficiency of process; (4) insufficiency of service of process; (5) failure to state a claim upon which relief can be granted; (6) failure to join a party under C.R.C.P. 19.
Colorado numbers failure to state a claim as 12(b)(5), not the federal 12(b)(6), and subject-matter jurisdiction as 12(b)(1). On a 12(b)(5) motion, if matters outside the pleading are presented to and not excluded by the court, the motion is treated as one for summary judgment under C.R.C.P. 56.
Under C.R.C.P. 121 Section 1-15(1), a motion involving a contested issue of law is supported by a recitation of legal authority incorporated into the motion itself and is not filed with a separate brief. Motions and briefs are double-spaced except footnotes and quotations.
A motion to dismiss under 12(b)(5) and its responsive brief are limited to 15 pages (not more than 4,000 words), with reply briefs to 10 pages (not more than 2,500 words). A motion under 12(b)(1) or (2) gets 25 pages (not more than 6,500 words), with reply to 15 pages (not more than 4,000 words). Limits exclude the caption, signature block, certificate of service, and attachments.
C.R.C.P. 121 Section 1-15(8) generally requires moving counsel to confer with opposing counsel before filing a motion and to include a good-faith conferral certification, but the official committee comment names a motion to dismiss as one where conferring would not be appropriate. The treatment of a motion to dismiss is unsettled, so confer unless your motion is one the rule exempts, check the current rule, and include a certification stating whether and why no conference was held.
File with the clerk of the trial court named in the summons: County Court for civil claims up to $25,000, or District Court for claims over $25,000. Under C.R.C.P. 121 Section 1-15(10), each motion is accompanied by a proposed order submitted in editable format, and you serve the motion on all parties and file a certificate of service.
Frequently Asked Questions
In Colorado you file a motion to dismiss under C.R.C.P. 12(b) in place of an answer. You state the enumerated grounds, incorporate your legal authority into the motion itself under C.R.C.P. 121 Section 1-15(1) rather than filing a separate brief, attach a proposed order in editable format, and file with the clerk of the District Court or County Court named in the summons.
A 12(b) motion to dismiss is filed in place of the answer within the C.R.C.P. 12(a) window: 21 days after the summons and complaint are served, or 35 days if you were served outside Colorado or by publication. C.R.C.P. 12(b) allows the listed defenses to be raised by separate motion filed on or before the date the answer is due.
C.R.C.P. 12(b), applied in Colorado's District Court, lets a defendant raise defenses by motion rather than in the answer. The threshold objections challenge the court's reach or the mechanics of suit: jurisdiction over the subject matter or the person, and insufficiency of process or its service. The merits ground, failure to state a claim upon which relief can be granted, carries Colorado's own numbering of 12(b)(5) rather than the federal 12(b)(6). Failure to join a party under C.R.C.P. 19 is also available.
It is unsettled. C.R.C.P. 121 Section 1-15(8) generally requires moving counsel to confer with opposing counsel before filing a motion and to include a good-faith conferral certification, but the official committee comment names a motion to dismiss as one where conferring would not be appropriate. Confer unless your motion is one the rule exempts, check the current rule, and include a certification stating whether and why no conference was held.
If the court denies the motion, the case proceeds and you answer on the schedule the court sets. On a 12(b)(5) motion for failure to state a claim, if matters outside the pleading are presented to and not excluded by the court, the motion is treated as one for summary judgment and disposed of under C.R.C.P. 56 instead.
You file with the clerk of the trial court named in the summons. Civil claims up to $25,000 are filed in County Court, and claims over $25,000 are filed in District Court. Small Claims Court, with a $7,500 cap, uses its own simplified procedure rather than C.R.C.P. 12 motion practice.