Alternative dispute resolution is the possibility that all consumers have at their disposal to appeal to official entities that help them in resolving or guiding a conflict. The Online Dispute Resolution website is an official website managed by the European Commission dedicated to helping consumers and traders resolve their disputes outside of court:


Customers who are defined as consumers by Law 144/2015 and who have signed purchase and sale and/or service provision contracts have the right to turn to official entities that help them in resolving any conflict concerning such contracts, without prejudice to recourse to the Judicial Courts. The updated list of Alternative Dispute Resolution entities available under article 17 of Law no. 144/2015, of 8 September, is listed on the Consumer Portal, accessible via the website For more information, you can also consult Law 144/2015. We further inform you that, to resolve disputes arising from online purchases, you can use a resolution system, called “ODR Platform - Online Dispute Resolution/ RLL”, created by the EU.


In any case, you can contact one of the centers designated below.

Entities for Alternative Dispute Resolution

CNIACC – National Center for Information and Arbitration of Consumer Conflicts


CIMAAL - Center for Information, Mediation and Arbitration of Consumer Disputes in the Algarve


Consumer Dispute Arbitration Center of the District of Coimbra


Lisbon Consumer Dispute Arbitration Center


Porto Consumer Information and Arbitration Center


Vale do Ave Consumer Dispute Arbitration Center / Arbitration Court


European Online Dispute Resolution Platform: