Alberta civil procedure
When may an Alberta third party demand notice without defending?
20 days after Alberta service. File Form 18 and serve each other party. Rule 3.50 concerns a third party demand, with service on all other parties. Its branch changes to one month for service elsewhere in Canada and two months outside Canada.
- Period
- 20 days after Alberta service
- Trigger
- Effective Alberta service of the third party claim
- Rule
- Alberta Rules of Court, Alta Reg 124/2010, r 3.50(2) and (3)(a)
Official Rules of Court volume current June 2026, including AR 79/2026. The official 2026 regulation index was checked for subsequent amendments.
Source guide · No automated date
Check the applicable procedure
Rule 3.50 concerns a third party demand, with service on all other parties. Its branch changes to one month for service elsewhere in Canada and two months outside Canada. The unresolved completion facts are effective Alberta service of the third party claim and the source-qualified route to file Form 18 and serve each other party.
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When may an Alberta third party demand notice without defending?
20 days after Alberta service. File Form 18 and serve each other party. Rule 3.50 concerns a third party demand, with service on all other parties. Its branch changes to one month for service elsewhere in Canada and two months outside Canada.
Responsible actor. The third party defendant choosing a demand for notice.
Effective Alberta service of the third party claim.
Rule 3.50 concerns a third party demand, with service on all other parties. Its branch changes to one month for service elsewhere in Canada and two months outside Canada.
Rule 3.50 concerns a third party demand, with service on all other parties. Its branch changes to one month for service elsewhere in Canada and two months outside Canada.
Alberta Rules of Court, Alta Reg 124/2010, r 3.50(2) and (3)(a)How does this provision count time?
- Identify effective Alberta service of the third party claim.
- File Form 18 and serve each other party.
- For file Form 18 and serve each other party, rule 13.3 excludes the actual event day and counts ordinary calendar days. The source states 20 days after Alberta service. Rule 3.50 concerns a third party demand, with service on all other parties. Its branch changes to one month for service elsewhere in Canada and two months outside Canada.
- Check the actual completion for file Form 18 and serve each other party. Interpretation Act section 22 distinguishes a holiday from a closed office where an act must be completed. Verify the operative recipient, filing method and opening facts before applying an open-day carry to 20 days after Alberta service.
For file Form 18 and serve each other party, rule 13.3 excludes the actual event day and counts ordinary calendar days. The source states 20 days after Alberta service. Rule 3.50 concerns a third party demand, with service on all other parties. Its branch changes to one month for service elsewhere in Canada and two months outside Canada.
Check the actual completion for file Form 18 and serve each other party. Interpretation Act section 22 distinguishes a holiday from a closed office where an act must be completed. Verify the operative recipient, filing method and opening facts before applying an open-day carry to 20 days after Alberta service.
Alberta Rules of Court, Alta Reg 124/2010, r 3.50(2) and (3)(a)Which facts prevent one automatic date?
Rule 3.50 concerns a third party demand, with service on all other parties. Its branch changes to one month for service elsewhere in Canada and two months outside Canada. The unresolved completion facts are effective Alberta service of the third party claim and the source-qualified route to file Form 18 and serve each other party.
The third party defendant choosing a demand for notice establishes effective Alberta service of the third party claim. Rule 3.50 concerns a third party demand, with service on all other parties. Its branch changes to one month for service elsewhere in Canada and two months outside Canada. 20 days after Alberta service. File Form 18 and serve each other party. This source scenario does not calculate a final date.
The proposed boundary for file Form 18 and serve each other party meets a holiday or closed office. Check the actual completion for file Form 18 and serve each other party. Interpretation Act section 22 distinguishes a holiday from a closed office where an act must be completed. Verify the operative recipient, filing method and opening facts before applying an open-day carry to 20 days after Alberta service. Establish the precise optional notice right and applicable closure facts. No moved final date is supplied.
Service was effected outside Alberta, so the twenty-day branch is not established. Rule 3.50 concerns a third party demand, with service on all other parties. Its branch changes to one month for service elsewhere in Canada and two months outside Canada. Review Alberta Rules of Court, Alta Reg 124/2010, r 3.50(2) and (3)(a) with the changed facts. 20 days after Alberta service cannot resolve this branch by itself.
Which conditions and exceptions apply?
- Actual source branch
- Rule 3.50 concerns a third party demand, with service on all other parties. Its branch changes to one month for service elsewhere in Canada and two months outside Canada.
- Source interval and calendar
- For file Form 18 and serve each other party, rule 13.3 excludes the actual event day and counts ordinary calendar days. The source states 20 days after Alberta service. Rule 3.50 concerns a third party demand, with service on all other parties. Its branch changes to one month for service elsewhere in Canada and two months outside Canada.
- Actor and completion
- The third party defendant choosing a demand for notice. File Form 18 and serve each other party.
- Rule 3.50 concerns a third party demand, with service on all other parties. Its branch changes to one month for service elsewhere in Canada and two months outside Canada.
- The actor is the third party defendant choosing a demand for notice. The event is effective Alberta service of the third party claim. The boundary is optional notice right. Rule 3.50 concerns a third party demand, with service on all other parties. Its branch changes to one month for service elsewhere in Canada and two months outside Canada.
What must the responsible actor complete?
Questions about this procedure
When may an Alberta third party demand notice without defending?
Is the ordinary defendant’s Form 13 used here?
No. Rule 3.50(1) specifies Form 18 for a third party defendant.
Alberta Rules of Court, Alta Reg 124/2010, r 3.50(2) and (3)(a)Must the demand reach every other party?
Yes. Rule 3.50(2) requires filing and service on each other party.
Alberta Rules of Court, Alta Reg 124/2010, r 3.50(2) and (3)(a)Does the demand period run from the defendant’s defence filing?
No. It runs after service of the third party claim on the third party defendant.
Alberta Rules of Court, Alta Reg 124/2010, r 3.50(2) and (3)(a)What period follows service elsewhere in Canada?
Rule 3.50(3)(b) states one month for service outside Alberta but within Canada.
Alberta Rules of Court, Alta Reg 124/2010, r 3.50(2) and (3)(a)What period follows service outside Canada?
Paragraph(3)(c) states two months.
Alberta Rules of Court, Alta Reg 124/2010, r 3.50(2) and (3)(a)Is a demand for notice the same as a third party defence?
No. The separate Form 17 defence procedure is in rule 3.49 and addresses disputed liability.
Alberta Rules of Court, Alta Reg 124/2010, r 3.50(2) and (3)(a)Official sources and review
Provisions used (3)
| Provision | Purpose |
|---|---|
| Alberta Rules of Court, Alta Reg 124/2010, r 3.50(2) and (3)(a) | Check the identified procedure, event, counting rule or qualification |
| Alberta Rules of Court, rules 13.2 to 13.5 | Check the identified procedure, event, counting rule or qualification |
| Alberta Interpretation Act, section 22 | Check the identified procedure, event, counting rule or qualification |