Rule 11.Signing of pleadings, motions and other papers: Representations to court, sanctions
Ch. III: Pleadings and Motions · Last amended 2018 · Current through June 1, 2026 · Last verified September 9, 2026
Full Text of Rule 11
Amendment History
Delaware prints each rule’s amendment history as a single “Credits” line naming every order that adopted or amended it. It is reproduced verbatim below.
[Amended effective September 3, 1996; December 1, 2018.]
Plain-English Summary
The signature. Every pleading, motion and other paper is signed by at least one attorney of record in their own name, or by the party if unrepresented, with an address and telephone number.
What signing certifies. By presenting a paper — signing it, filing it, submitting it, or later advocating it — the signer certifies, to the best of their knowledge, information and belief after an inquiry reasonable in the circumstances, four things: that it is not presented for an improper purpose such as harassment, delay or needless cost; that its legal contentions are warranted by existing law or by a nonfrivolous argument to change it; that its factual contentions have evidentiary support, or are identified as likely to have it after further investigation; and that its denials are warranted on the evidence, or are identified as reasonably based on a lack of information.
The safe harbour. A motion for sanctions is made separately from any other motion, describes the specific conduct complained of, and is served but NOT filed unless the offending paper is withdrawn or corrected within 21 days. That window is the heart of the rule: it makes the motion a warning first and a weapon second.
The sanction. Limited to what suffices to deter repetition by the person sanctioned or others similarly situated. Monetary sanctions may not be awarded against a represented party for a purely legal violation, nor on the court's own initiative unless the show-cause order issued before the case settled or was voluntarily dismissed. When it sanctions, the court must describe the conduct and explain the basis.
Not discovery. None of this applies to discovery requests, responses, objections or motions, which are governed by Rules 26 through 37 and have their own sanctions.
Frequently Asked Questions
What am I promising when I sign a court paper in Delaware?
That after a reasonable inquiry you believe it is not presented for an improper purpose, its legal contentions are warranted, its factual contentions have evidentiary support or are identified as needing further investigation, and its denials are warranted on the evidence.
What is the 21-day safe harbour?
A sanctions motion must be served but not filed with the court unless, within 21 days, the challenged paper is withdrawn or appropriately corrected.
Can I be fined personally for my lawyer's argument?
Monetary sanctions may not be awarded against a represented party for a violation of the certification that the legal contentions are warranted.
Does Rule 11 apply to discovery?
No. It does not apply to disclosures, discovery requests, responses, objections or motions, which are subject to Rules 26 through 37.