Simmenthal

E1022580

case of the Court of Justice of the European Communities judgment of the European Court of Justice landmark court decision

Simmenthal is a landmark decision of the European Court of Justice that reinforced the supremacy and direct effect of European Community law over conflicting national legislation.

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All labels observed (2)

Label	Occurrences
Simmenthal II	2
Simmenthal canonical	1

How this entity was disambiguated

This entity first appeared as the object of triple T13133708 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Simmenthal
Context triple: [Van Gend en Loos, citedBy, Simmenthal]

A. Biesenthal
Biesenthal is a small town in the Barnim district of Brandenburg, Germany, known for its surrounding lakes, forests, and location within the Barnim Nature Park.
B. Marienthal
Marienthal is a district of the German city of Zwickau, known primarily as a residential area with local amenities and green spaces.
C. Kurzberg
Kurzberg is a surname of German origin, likely derived from geographic or topographic roots.
D. Machtolsheim
Machtolsheim is a village in the Alb-Donau district of Baden-Württemberg, Germany, that forms part of the town of Laichingen.
E. Bentov
Bentov is a Hebrew surname most notably associated with Mordechai Bentov, an Israeli politician and signatory of the Israeli Declaration of Independence.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Simmenthal
Target entity description: Simmenthal is a landmark decision of the European Court of Justice that reinforced the supremacy and direct effect of European Community law over conflicting national legislation.

A. Biesenthal
Biesenthal is a small town in the Barnim district of Brandenburg, Germany, known for its surrounding lakes, forests, and location within the Barnim Nature Park.
B. Marienthal
Marienthal is a district of the German city of Zwickau, known primarily as a residential area with local amenities and green spaces.
C. Kurzberg
Kurzberg is a surname of German origin, likely derived from geographic or topographic roots.
D. Machtolsheim
Machtolsheim is a village in the Alb-Donau district of Baden-Württemberg, Germany, that forms part of the town of Laichingen.
E. Bentov
Bentov is a Hebrew surname most notably associated with Mordechai Bentov, an Israeli politician and signatory of the Israeli Declaration of Independence.
F. None of above. chosen

Statements (42)

Predicate	Object
instanceOf	case of the Court of Justice of the European Communities ⓘ judgment of the European Court of Justice ⓘ landmark court decision ⓘ
areaOfLaw	EU constitutional law ⓘ linked to: European Union legal order direct effect of EU law ⓘ supremacy of EU law ⓘ
authorityLevel	leading authority on primacy of EU law ⓘ
caseNumber	Case 106/77 ⓘ
citationStyle	Case 106/77, Amministrazione delle Finanze dello Stato v Simmenthal SpA ⓘ linked to: R v Secretary of State for Transport, ex parte Factortame Ltd
citedAsPrecedentIn	cases on direct effect of EU law ⓘ cases on primacy of EU law ⓘ
countryOfOrigin	Italy ⓘ
court	European Court of Justice ⓘ linked to: Court of Justice of the European Union
decisionDate	1978-03-09 ⓘ
educationUse	commonly taught in EU law courses ⓘ
effectOnJudiciaries	strengthens role of ordinary national courts in enforcing EU law ⓘ
effectOnNationalLaw	requires immediate disapplication of incompatible national provisions ⓘ
fullName	Amministrazione delle Finanze dello Stato v Simmenthal SpA ⓘ
holding	national courts do not need to await the prior setting aside of national law by a constitutional court or legislature ⓘ national courts must disapply conflicting national law on their own authority ⓘ national courts must give full effect to directly effective provisions of Community law ⓘ national courts must set aside any conflicting national legislation ⓘ
impact	clarified obligations of national courts when faced with conflicting national and Community law ⓘ
involvedInstitution	Italian national courts ⓘ linked to: Judiciary of Italy
jurisdiction	Member State courts of the European Communities ⓘ
languageOfProceedings	Italian ⓘ
legalOrder	European Community law ⓘ linked to: European Union legal order European Union law ⓘ linked to: European Union legal order
legalSystem	European Communities legal system ⓘ linked to: European Union legal order
party	Amministrazione delle Finanze dello Stato ⓘ Simmenthal SpA ⓘ
principleAffirmed	direct effect of Community law provisions ⓘ duty of national courts to protect rights conferred by Community law ⓘ supremacy of Community law over conflicting national law ⓘ
region	Europe ⓘ
reinforcesCaseLaw	Costa v ENEL ⓘ Internationale Handelsgesellschaft ⓘ
relatedConcept	direct applicability ⓘ disapplication of national law ⓘ primacy of EU law ⓘ
subjectMatter	conflict between Italian legislation and directly effective Community law provisions ⓘ
yearDecided	1978 ⓘ

How these facts were elicited

Referenced by (3)

Full triples — surface form annotated when it differs from this entity's canonical label.

Van Gend en Loos → citedBy → Simmenthal ⓘ

Costa v ENEL → citedBy → Simmenthal II ⓘ

linked to: Simmenthal

Internationale Handelsgesellschaft mbH v Einfuhr- und Vorratsstelle für Getreide und Futtermittel → comparedWith → Simmenthal II ⓘ