Add-on case: memorandum and declarations in opposition
15 days after date the party submitted its notice of opposition to the add-on request, under Cal. Rules of Court, rule 3.544(b).
Rule text
(b): "Within 10 days after the service of a request, any party may serve and submit a notice of opposition to the request. Thereafter, within 15 days after submitting a notice of opposition, the party must serve and submit a memorandum and declarations in opposition to the request. Failure to serve and submit a memorandum and declarations in opposition may be a ground for granting the request to coordinate an add-on case." (d): "If no party has filed a notice of opposition within the time required under (b), the coordination trial judge may enter an order granting or denying the request without a hearing."
Calculate this deadline
- Trigger (Date the party submitted its notice of opposition to the add-on request): Friday, November 6, 2026.
- Exclude the trigger day and count 15 calendar days: Saturday, November 21, 2026.
- That day is a Saturday, so the deadline moves to the next court day: Monday, November 23, 2026 (Cal. Code Civ. Proc. 12, 12a, 12b, 10; Cal. Rules of Court, rule 1.10).
Cal. Rules of Court, rule 3.544(b)
(b): "Within 10 days after the service of a request, any party may serve and submit a notice of opposition to the request. Thereafter, within 15 days after submitting a notice of opposition, the party must serve and submit a memorandum and declarations in opposition to the request. Failure to serve and submit a memorandum and declarations in opposition may be a ground for granting the request to coordinate an add-on case." (d): "If no party has filed a notice of opposition within the time required under (b), the coordination trial judge may enter an order granting or denying the request without a hearing."Official source
Cal. Code Civ. Proc. 12, 12a, 12b, 10; Cal. Rules of Court, rule 1.10
CCP 12: "The time in which any act provided by law is to be done is computed by excluding the first day, and including the last, unless the last day is a holiday, and then it is also excluded." CCP 12a(a): "If the last day for the performance of any act provided or required by law to be performed within a specified period of time is a holiday, then that period is hereby extended to and including the next day that is not a holiday. For purposes of this section, “holiday” means all day on Saturdays, all holidays specified in Section 135 and, to the extent provided in Section 12b, all days that by terms of Section 12b are required to be considered as holidays." CCP 12b: "If any city, county, state, or public office, other than a branch office, is closed for the whole of any day, insofar as the business of that office is concerned, that day shall be considered as a holiday for the purposes of computing time under Sections 12 and 12a." CCP 10: "Holidays within the meaning of this code are every Sunday and any other days that are specified or provided for as judicial holidays in Section 135."Official source
- Runs from the party's OWN submission of the notice of opposition (not from service), so no CCP 1013 add-on. Failure may be a ground for granting the add-on request. If the judge orders a hearing under 3.544(c), additional briefing schedules may be set by order.
- If the clerk's office is closed or inaccessible on the last day (weather, emergency or local closure orders), the deadline may be extended. Check local orders.
This calculator applies the cited rules to the dates you enter. It is not legal advice. Court orders, local rules, and case-specific facts can change a deadline; verify before relying on it. Rule set pending attorney review.
Worked example
Date the party submitted its notice of opposition to the add-on request on Monday, March 15, 2027, personal service: due Tuesday, March 30, 2027.
- Trigger (Date the party submitted its notice of opposition to the add-on request): Monday, March 15, 2027.
- Exclude the trigger day and count 15 calendar days: Tuesday, March 30, 2027.
Notes
Runs from the party's OWN submission of the notice of opposition (not from service), so no CCP 1013 add-on. Failure may be a ground for granting the add-on request. If the judge orders a hearing under 3.544(c), additional briefing schedules may be set by order.
Related deadlines
- Coordination: make original signed (penalty of perjury) document available after demand (5 days after)
- Coordination proceeding: serve and submit supporting or opposing memoranda and declarations (9 court days before)
- Petition for coordination: response in opposition (9 court days before)
- Petition for coordination: response in support (and alternate site request) (9 court days before)
- Petition for coordination: serve notice of submission, petition, and supporting papers on all parties (5 court days after)
- Petition for coordination: submit notice, proof of filing, and proof of service to the Chair of the Judicial Council (5 court days after)
- Coordination motion judge sets hearing on petition (court deadline) (30 days after)
- Coordination: opposition to motion for stay order (CCP 404.5) (10 days after)
Local rules by county
County local rules and courtroom procedures can add to or change this deadline. Pick a county to calculate with them applied.
- Alameda
- Alpine
- Amador
- Butte
- Calaveras
- Colusa
- Contra Costa
- Del Norte
- El Dorado
- Fresno
- Glenn
- Humboldt
- Imperial
- Inyo
- Kern
- Kings
- Lake
- Lassen
- Los Angeles
- Madera
- Marin
- Mariposa
- Mendocino
- Merced
- Modoc
- Mono
- Monterey
- Napa
- Nevada
- Orange
- Placer
- Plumas
- Riverside
- Sacramento
- San Benito
- San Bernardino
- San Diego
- San Francisco
- San Joaquin
- San Luis Obispo
- San Mateo
- Santa Barbara
- Santa Clara
- Santa Cruz
- Shasta
- Sierra
- Siskiyou
- Solano
- Sonoma
- Stanislaus
- Sutter
- Tehama
- Trinity
- Tulare
- Tuolumne
- Ventura
- Yolo
- Yuba
Rules current as of 2026-10-25. Confirm against the official source and any local rule or court order before relying on a date. Rules changelog.