What it does not mean
Open does not mean there are no eligibility rules, submission deadlines, or evaluation requirements.
In practice in Portugal
With a notice in the Official Journal, a concurso público cannot give bidders less than 30 days from the day the notice was sent to the Publications Office. The period can fall to 15 days after a qualifying prior information notice or in a duly justified urgency (CCP, Article 136(1) to (3)).
Without EU publication, the minimum is six days, or 14 days for public works, from sending the national notice (Article 135(1)). Buyers often set more: a BASE announcement checked for this page gave 17 days.
In practice in Spain
For harmonised contracts the minimum is 35 days from sending the notice. It can drop to 15 days after a prior information notice or in justified urgency, and by five days if electronic submission is accepted (LCSP, Article 156(2) and (3)).
For contracts of public administrations that are not subject to harmonised regulation, the minimum is 15 days from the day after publication on the buyer's profile, and 26 days for works (Article 156(6)).
The procedimiento abierto simplificado has its own rules: 15 days (20 for works), publication on the buyer's profile only, bidders registered in the official register of bidders by the deadline, and limits on value and on judgement-based criteria (Article 159(1) to (4)).
The EU rule behind both
The EU rule is 35 days from sending the contract notice, reducible in the cases above (Directive 2014/24/EU, Article 27(1) to (4)).
What you see on the notice
- BASE: “Tipo de modelo: Concurso público” on the announcement, with “Prazo para apresentação de propostas” in days.
- TED: “Type of procedure: Open” and “Deadline for receipt of tenders” with the date, time and time zone.
- PLACSP: the “Procurement procedure” field (English interface) names the procedure in Spanish.
How Sinal shows it
The procedure type appears in notice details when the source provides it.
- An open call is the default, so the feed row shows no chip for it; the drawer shows “Open”: “any supplier may bid”. A simplified procedure shows “Open, simplified”.
- The drawer's Deadline row is the date to submit a tender.