Res judicata – ARBITRATION PORTUGAL

October 15, 2025April 11, 2026

Portuguese Arbitration: Recognition of Foreign Arbitral Awards | Res Judicata

Arbitration Portugal powered by Victoria Associates

Porto Court of Appeal

Case No. 1178/22.8T8OVR-A.P1

Date: 29 June 2023

Link to DGSI website HERE

Keywords: Recognition of Arbitral Awards | Res Judicata

Summary:

I – It follows from Article 980, in conjunction with Article 983(1) of the Code … Read more

July 8, 2023April 11, 2026

Supreme Court of Justice | Recognition of Foreign Arbitral Awards | Public Policy | Case #133

Case 991/20.5YRLSB.S1

22-06-2023

Link to DGSI

Summary:

I. The judgment rendered in a special action for the recognition of a foreign arbitral award is subject to a review appeal to the Supreme Court under the provisions of Article 671(1) of … Read more

January 8, 2019April 11, 2026

(Portugal) Supreme Court of Justice | Kompetenz-Kompetenz | Decision on the Constitutionality and Res Judicata | 27-11-2018 | Case #83

**(Portugal) Supreme Court of Justice | Kompetenz-Kompetenz | Decision on the Constitutionality and Res Judicata | 27-11-2018 | Case #83
Date: 27/11/2018
Case Nr. 1030/12.5TVLSB.L1.S1.S2**
Link DGSI HERE

Headline
It is up to the arbitral tribunal to decide on its

December 21, 2018April 11, 2026

Guimarães Court of Appeal | Annulment of the Arbitral Award | Res judicata | 15-11-2018| Case #082

Guimarães Court of Appeal | Annulment of the Arbitral Award | Res judicata | 15-11-2018| Case #082
Date: 15-11-2018
Case Nr. 156/18.6YRGMR
LINK DGSI

Headline:

The defects that can justify the action for annulment of the arbitral award are

November 13, 2018April 11, 2026

(Portugal) Supreme Court of Justice | Enforcement of the Arbitral Award | Res Judicata | Annulment of the Arbitral Award | 04-10-2018 | Case #080

Supreme Court of Justice
Date: 04-10-2018
Case Nr. 10758/01.4TVLSB-A.L1.S1
LINK DGSI

Headline:

The Old Arbitration Law (1986) will apply to enforcement procedures initiated before the New Arbitration Law came into force.

The Old Arbitration Law provided for the following mechanisms

September 30, 2018April 11, 2026

Lisbon Court of Appeal | Modification of Arbitral Awards | 28-01-2016 | Case #070

Lisbon Court of Appeal | Modification of Arbitral Awards | 28-01-2016
Date: 28-01-2016
Case Nr. 660/15.8YRLSB-2
Link DGSI

Headlines
An arbitral award may be modified if the facts on which it was based have subsequently suffered a material change.

August 14, 2018April 11, 2026

Supreme Court of Justice (Portugal) | Territorial Jurisdiction of the Courts of Appeal | Res judicata | Seat of Arbitration |06-09-2016 | Case #0018

Supreme Court of Justice
Date: 06-09-2016
Case Nr. 158/15.4YRCBR.S1
LINK DGSI

Headline:

As per Art. 39(1) of the LAV, the jurisdiction to appoint arbitrators lies with the court situated in the ‘seat of arbitration’. The time-limit to file an … Read more

July 25, 2018April 11, 2026

Supreme Court of Justice (Portugal)| Res judicata |04-07-2013 | Case #002

Portuguese Supreme Court of Justice
Date: 04-07-2013
Case Nr. 536/11.8TTPRT-A.P1.S1
LINK DGSI

Headlines

Res judicata.
Arguments pleaded in the annulment procedure may not be invoked in the oppostion against the enforcement of the arbitral award.

Summary:

1.It is the … Read more

Summary:

(Portugal) Supreme Court of Justice | Kompetenz-Kompetenz | Decision on the Constitutionality and Res Judicata | 27-11-2018 | Case #83 Date: 27/11/2018 Case Nr. 1030/12.5TVLSB.L1.S1.S2 Link DGSI HERE

Headline It is up to the arbitral tribunal to decide on its

Guimarães Court of Appeal | Annulment of the Arbitral Award | Res judicata | 15-11-2018| Case #082 Date: 15-11-2018 Case Nr. 156/18.6YRGMR LINK DGSI

Headline:

The defects that can justify the action for annulment of the arbitral award are

Supreme Court of Justice Date: 04-10-2018 Case Nr. 10758/01.4TVLSB-A.L1.S1 LINK DGSI

Headline:

The Old Arbitration Law (1986) will apply to enforcement procedures initiated before the New Arbitration Law came into force.

The Old Arbitration Law provided for the following mechanisms

Lisbon Court of Appeal | Modification of Arbitral Awards | 28-01-2016 Date: 28-01-2016 Case Nr. 660/15.8YRLSB-2 Link DGSI

Headlines An arbitral award may be modified if the facts on which it was based have subsequently suffered a material change.

Supreme Court of Justice Date: 06-09-2016 Case Nr. 158/15.4YRCBR.S1 LINK DGSI

Headline:

Portuguese Supreme Court of Justice Date: 04-07-2013 Case Nr. 536/11.8TTPRT-A.P1.S1 LINK DGSI

Headlines

Res judicata.

Arguments pleaded in the annulment procedure may not be invoked in the oppostion against the enforcement of the arbitral award.

**(Portugal) Supreme Court of Justice | Kompetenz-Kompetenz | Decision on the Constitutionality and Res Judicata | 27-11-2018 | Case #83
Date: 27/11/2018
Case Nr. 1030/12.5TVLSB.L1.S1.S2**
Link DGSI HERE

Headline
It is up to the arbitral tribunal to decide on its

Guimarães Court of Appeal | Annulment of the Arbitral Award | Res judicata | 15-11-2018| Case #082
Date: 15-11-2018
Case Nr. 156/18.6YRGMR
LINK DGSI

Supreme Court of Justice
Date: 04-10-2018
Case Nr. 10758/01.4TVLSB-A.L1.S1
LINK DGSI

Lisbon Court of Appeal | Modification of Arbitral Awards | 28-01-2016
Date: 28-01-2016
Case Nr. 660/15.8YRLSB-2
Link DGSI

Headlines
An arbitral award may be modified if the facts on which it was based have subsequently suffered a material change.

Supreme Court of Justice
Date: 06-09-2016
Case Nr. 158/15.4YRCBR.S1
LINK DGSI

Portuguese Supreme Court of Justice
Date: 04-07-2013
Case Nr. 536/11.8TTPRT-A.P1.S1
LINK DGSI