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United States · Delaware Court of Chancery

When is the opening brief supporting ordinary Chancery exceptions due?

Rule 144(d)(1) requires the opening brief within 20 days after notice of exceptions is filed. A procedural-review order stays briefing until its specified Report.

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Period
20 days for the disclosed rule component
Trigger
Filing of the notice of exceptions
Rule
Ct. Ch. R. 144(d)(1)
Ct. Ch. R. 144(d)(1)

Official rules current as of June 1, 2026, reviewed. The calculator supports this current edition only.

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Which event starts this Ct. Ch. R. 144(d)(1) inquiry?

Filing of the notice of exceptions

The Report date starts the earlier notice stage, not this opening-brief clock. Check whether a Reviewing Judge has ordered procedural review.

Responsible actor. The party taking exceptions in the ordinary Rule 144(d)(1) branch. Use the actual filed notice of exceptions in an ordinary action. No procedural-review stay or different briefing order applies.

Ct. Ch. R. 144(d)(1)

How does Rule 6 count this particular component?

  1. Use the actual filed notice of exceptions in an ordinary action. No procedural-review stay or different briefing order applies.
  2. Exclude the trigger day and count 20 calendar days under Rule 6(a)(1). The less-than-11-day exclusion does not apply. Check the final weekend, legal holiday and actual Register accessibility.
  3. Check the actual holidays, additional closures and applicable electronic or paper boundary.
  4. File and serve the opening brief supporting the actual exceptions. Preserve timely filing because failure can withdraw the notice.

Rule 6(a)(1) excludes the event day. Periods below eleven days exclude intermediate Saturdays, Sundays and legal holidays; eleven days or more include them. A final weekend or legal holiday moves forward for an after-event period and backward for a before-event period. Rule 6(a)(3) separately addresses actual Register inaccessibility for filings. Rule 6(a)(5) includes section 501 holidays and days declared by the Governor. Good Friday and Thanksgiving Friday are Delaware holidays. Sunday July 4, 2027 is observed Monday July 5. Check county-specific Sussex Return Day and additional actual closures separately; the bundled calendar does not determine those filing conditions.

Rule 6(c) adds three calendar days after the ordinary Rule 6(a) period only for an act measured after service made exclusively by mail. It applies to party acts, not Court acts. Electronic service, an entry-based clock and a filing-based clock do not acquire that addition merely because a paper copy is mailed. These calculations show the disclosed nonexclusive-mail base component; they do not implement the mail-only addition or infer service effectiveness.

These reviewed calculators use the official edition current as of June 1, 2026. Events before that date and backward periods crossing before that date receive no computed or paid date. This is publication coverage, not a finding that an actual procedural act is late. Historical editions, emergency measures, court-modified dates and actual additional closures require separate review.

Ct. Ch. R. 6(a)–(c)

What does an independently derived example show?

Fictitious example

Use the actual filed notice of exceptions in an ordinary action. No procedural-review stay or different briefing order applies. Ordinary current-edition facts, no changed order and no exclusively mailed incoming service.

Example counting steps
StepWhat is countedDate
Established eventFiling of the notice of exceptionsAugust 2, 2027
Disclosed rule boundary20 days for the disclosed rule componentAugust 23, 2027
Example resultAugust 23, 2027

Fictitious current-edition facts. This is the disclosed component with no altered order or additional actual closure. It does not establish effective service, completed filing, judicial action or procedural entitlement. Exclusively mailed incoming-service additions require separate review.

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Which qualifications change this procedure?

Procedural review
A Reviewing Judge’s procedural-review order stays briefing until the Magistrate issues the procedural-review Report.
Missed opening brief
An untimely opening brief deems the notice withdrawn and leads to an order adopting the Report.
Mail-only service and actual court schedule
Rule 6(c) adds three calendar days after the ordinary Rule 6(a) period only for an act measured after service made exclusively by mail. It applies to party acts, not Court acts. Electronic service, an entry-based clock and a filing-based clock do not acquire that addition merely because a paper copy is mailed. These calculations show the disclosed nonexclusive-mail base component; they do not implement the mail-only addition or infer service effectiveness.
Current edition and historical scope
These reviewed calculators use the official edition current as of June 1, 2026. Events before that date and backward periods crossing before that date receive no computed or paid date. This is publication coverage, not a finding that an actual procedural act is late. Historical editions, emergency measures, court-modified dates and actual additional closures require separate review.
Ct. Ch. R. 144(d)(1)
  • Use the actual filed notice of exceptions in an ordinary action. No procedural-review stay or different briefing order applies.
  • The base calculation does not obtain an extension, resolve a different branch or establish that the responsible actor completed the required act.

Which completed acts and evidence should be preserved?

Questions about Ct. Ch. R. 144(d)(1)

When is the opening brief supporting ordinary Chancery exceptions due?

Does the Report date start these twenty days?

No. The opening-brief branch starts from filing of the notice of exceptions.

Ct. Ch. R. 144(d)(1)

Is briefing automatically stayed whenever exceptions are filed?

No. The specified stay requires the Reviewing Judge’s procedural-review order.

Ct. Ch. R. 144(c)(3)(A)

Can a timely notice survive failure to file a timely opening brief?

Rule 144(d)(3) deems the notice withdrawn if the opening brief is untimely.

Ct. Ch. R. 144(d)(3)

Official Chancery sources and edition review

Provisions used (12)
Provisions used in this guide
ProvisionPurpose
Ct. Ch. R. 144(d)(1)The particular actor, event, procedural act and rule conditions
Ct. Ch. R. 144(c)(3)(A)The separately identified counting, filing, procedural qualification or edition source
Ct. Ch. R. 144(d)(3)The separately identified counting, filing, procedural qualification or edition source
Ct. Ch. R. 144(d)(1)The separately identified counting, filing, procedural qualification or edition source
Ct. Ch. R. 6(a)–(c)The separately identified counting, filing, procedural qualification or edition source
Ct. Ch. R. 5(b)–(f)The separately identified counting, filing, procedural qualification or edition source
1 Del. C. § 501(a)–(c)The separately identified counting, filing, procedural qualification or edition source
Court of Chancery rule editions and amendmentsThe separately identified counting, filing, procedural qualification or edition source
May 18, 2026 implementing order, effective June 1, 2026The separately identified counting, filing, procedural qualification or edition source
July 12, 2024 corrected implementing orderThe separately identified counting, filing, procedural qualification or edition source
September 23, 2025 Magistrate amendments, effective September 30, 2025The separately identified counting, filing, procedural qualification or edition source
Register in Chancery filing practices, July 26, 2023Older filing practices, read subject to the current Rule 5 text
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