Ort: Berlin

Institution: TU Berlin



Prof. Dr. Steffen Hindelang, LL.M.



Vortrag zu „The Interrelations between Investment Treaty Standards and Other International Legal Regimes (Human Rights, Sustainable Development, Cultural Property, Indigenous Peoples and other Non-Economic Interests) as a Rule of Law Problem“, gemeinsam mit Patricia Stöbener

Gehalten im Rahmen des Treffens des ILA Committee on “Rule of Law and International Investment Law” – Workshop „Investment Protection Standards: Rule of Law Problems – Rule of Law Lacunae“, Paris, 25. Juni 2019, Universität Panthéon Assas


Ort: Berlin

Institution: Humboldt-Universität zu Berlin



Prof. Dr. Steffen Hindelang und Dr. Tillmann Rudolf Braun




Poster Lunch Seminar


Programme ICC Copenhagen Arbitration Day 2019





Steffen Hindelang, Andreas Moberg: Debate: A Common European Law on Investment Screening?. 2019.


Steffen Hindelang: Conceptualisation and Application of the Principle of Autonomy of EU Law – The CJEU’s Judgement in Achmea Put in Perspective. In: European Law Review, 44 (3), S. 383-400, 2019.


It seemed that Court of Justice of the European Union wanted to make it short and sweet: It took the Grand Chamber in its Achmea judgement less than fifteen pages to conclude that Investor-State dispute settlement in an intra-EU context is incompatible with EU law.

The Judgement is noteworthy in terms of both the conceptualisation as well as the application of the principle of autonomy of EU law. In terms of conceptualisation of the principle, what we witness in Achmea, read in conjunction with another decision, could be a first subtle attempt to enrich the principle with notions of the rule of law. In terms of application, the Court further strengthens legal equality, its judicial monopoly, and – perhaps even more importantly – the role of the Member States’ courts, un-derstood as “traditional permanent State courts”, in the judicial dialogue.

Further publications on this question

The Limited Immediate Effects of CJEU’s Achmea Judgement

Read More →

Enemy at the Gates? Die aktuellen Änderungen der Investitionsprüfvorschriften in der Außenwirtschaftsverordnung im Lichte des Unionsrechts

Read More →

In Pursuit of an International Investment Court. Recently Negotiated Investment Chapters in EU Comprehensive Free Trade Agreements in Comparative Perspective

Read More →

Umfassende Wirtschafts- und Handelsabkommen – Das Recht der Happy Few?

Read More →

The Day after: Alternatives to intra-EU BITs

Read More →

Conclusion and Outlook: Whither International Investment Law?

Read More →


Ort: Odense

Institution: University of Southern Denmark

LV-Nummer: 80110001


Prof. Dr. Steffen Hindelang


Current Developments and Challenges in Public International Law

Session on International Investment law

Investing abroad – Challenges and opportunities for providing legal advice to Danish businesses in times of Brexit and mounting international protectionism

Denmark’s economic and social well-being depends strongly on open borders for trade and investment. What concerns investment, Denmark’s businesses hold direct investments abroad worth kr. 1,241.3 billion (€ 166.8 billion). In 2016 alone, the return on these investments amounted to kr. 71.3 billion (€ 9.5 billion).[1]

Investing abroad does not only subject Danish businesses to foreign laws and regulations and may lead to complex multi-jurisdictional legal issues, but also increases the so-called “political risk” of an investment. Especially long-term investments are extremely vulnerable to sudden policy changes in foreign markets. For example, referenda such as the one on Brexit may lead to a complete redesign of a nation’s legal trade and investment relations with other countries. The same holds true if, after general elections, a government switches from a previously liberal towards a protectionist trade and investment policy. The latter can be witnessed in the USA. In both scenarios, a sizeable number of Danish investments are affected: The UK is the second, the USA the third largest recipient of Danish direct investments amounting to kr. 153 billion (€ 20.6 billion) and kr. 126 billion (€ 16.9 billion) respectively.

Governments may enact discriminatory measures which impact foreign businesses more severely than domestic ones. Cases may relate to discriminatory taxation or more cumbersome administrative procedures. Governments may also decide to dishonour previously agreed subsidy schemes. Recently, this has been seen especially in the renewable energy sector; an economic sector of significance to Danish investments abroad. In extreme cases, foreign governments may even expropriate property owned by foreigners all together without providing adequate compensation.

Which legal instruments do Danish businesses have at hand in such situations? They could rely on legal remedies (which may or may not) be available in their host State jurisdiction. They can, however, also take recourse to means available in public international law, i.e. international investment law (IIL).

IIL can be defined as the body of rules and standards in public international law which aims at protecting investments abroad. Today, there are over 3000 bilateral and regional investment (protection) treaties creating, along with the customary international law on aliens, a dense and yet highly complex regulatory network. Denmark itself has signed or ratified 59 so-called bilateral investment treaties (BITs). Danish businesses, furthermore, benefit from investment-related rules contained in so-called comprehensive free trade agreements (FTAs) negotiated by the European Union with third countries.

The vast majority of bilateral and regional investment treaties provide for investor-state dispute settlement (ISDS); a peculiarity in public international law. An investor can initiate international arbitral proceedings against a sovereign host state challenging its measures on the grounds that they were incompatible with the substantive standards in the investment agreement. These measures accrue regularly from the exercise of public authority of the host state and can be executive, legislative or judicial in nature.

[1] In comparison, foreign investors owned assets worth kr. 685 billion (€ 92 billion) in Denmark by the end of 2016. All numbers from Danmarks Nationalbank, 2017.

Full Text

The Limited Immediate Effects of CJEU’s Achmea Judgement

It seemed that Court of Justice of the European Union (CJEU or Court) wanted to make it short and sweet: It took the Grand Chamber in its Achmea Decision (C-284/16) less than fifteen pages to conclude that Investor-State dispute settlement (ISDS), as we know it, shall belong to the past, at least in an intra-EU context.

ISDS in this sense means investment tribunals established ad hoc for the individual case on the initiative of the foreign investor. Typically, three arbitrators decide on whether the foreign investor’s host State, in the exercise of sovereign powers, has breached substantive guarantees contained in the bilateral investment treaty (BIT) in respect of the protection of the investor and its investment. The rules of procedure, so-called arbitration rules, are such as in the Convention on the Settlement of Disputes between States and Nationals of Other States (ICSID Convention) or those developed by United Nations Commission on International Trade Law (UNCITRAL) or the International Chamber of Commerce (ICC). Awards are binding on the disputing parties and typically final, except in rare circumstances.

The CJEU’s Achmea Decision originates in a request for preliminary ruling by the Bundesgerichtshof (German Federal Court of Justice, docket no. I ZB 2/15) in May 2016. In the German court proceedings, the Slovak Republic challenged an 2012 arbitral award (PCA Case No. 2008-13) rendered on the basis of the 1992 Agreement on Encouragement and Reciprocal Protection of Investments between the Kingdom of the Netherlands and the Czech and Slovak Federative Republic (the NCS BIT). Ruling in favour of a Dutch investor, the arbitral tribunal held the Slovak Republic was in breach of its substantive obligations under the NCS BIT when partly reversing the liberalisation of the private health insurance. In consequence, it awarded damages to the investor. The Slovak Republic has consistently argued in all the different fora that the investment tribunal lacks jurisdiction: As a result of the State’s accession to the European Union (EU), recourse to an investment tribunal provided for in the NCS BIT was incompatible with EU law.

On 6 March 2018, the CJEU essentially confirmed this view. In doing so, it deviated not only from the results reached by the investment tribunal and the Oberlandesgericht Frankfurt (Higher Regional Court Frankfurt, docket no. 26 SchH 11/10). It also completely sidelined Advocate General (AG) Wathelet’s opinion, who could not find any incompatibility with EU law. The AG’s “passionate” defence of investment arbitration prompted so much uproar that some Member States requested the re-opening of the oral proceedings.

The CJEU could safely decline such request as it came to the same conclusion as the Member States asking the oral proceedings to be re-opened: “Art. 267 and 344 TFEU must be interpreted as precluding a provision in an international agreement concluded between Member States, such as Art. 8 of the , under which an investor from one of those Member States may, in the event of a dispute concerning investments in the other Member State, bring proceedings against the latter Member State before an arbitral tribunal whose jurisdiction that Member State has undertaken to accept” (para. 62). The Court arrived at this result as follows:

A Play in Four Acts

One: The CJEU started off by sketching the standard of review, i.e. the principle of autonomy of EU law, rooted in particular in Art. 344 TFEU. In a nutshell: This principle is characterised by EU law forming an independent source of law, enjoying primacy over the laws of the Member States, and having direct effect (paras. 32-34). The central idea behind this is “to guarantee consistency and uniformity in the interpretation of EU law” (para. 35). In this effort the CJEU is joined by the courts of the Member States. The “keystone mechanism” which binds all these courts together to a judicial dialogue is the preliminary reference procedure established by virtue of Art. 267 TFEU.

Two: Having said this, the CJEU turned to the question of whether this judicial dialogue between itself and the courts of the Member States would be disrupted by allowing for investment arbitration based on an intra-EU BIT. A precondition for such is that an investment tribunal’s application of law is liable to relate to the interpretation or application of EU law (para. 39).

Referring to the dual nature of EU law, which forms part of the law of the Member States and is derived from a public international law source, the CJEU held that the arbitral tribunal “may be called on to interpret or indeed to apply EU law, particularly the provisions concerning the fundamental freedoms, including freedom of establishment and free movement of capital” (para. 42). Undeniably, it was about time to shatter the myth championed by some arbitral tribunals that intra-EU investment arbitration would not be able to affect the interpretation and application of EU law.

Three: Having arrived at this point, the Court had effectively placed an investment tribunal established on the basis of an intra-EU BIT under its scope of control, recalling that it is the CJEU’s foremost responsibility to secure the uniform interpretation and equal application of EU law throughout the Union’s territory. Now: An investment tribunal potentially applying and interpreting EU law could only have acquitted itself from the looming accusation of being “disruptive” in the judicial dialogue, if it either had access to the preliminary reference procedure, or its arbitral decisions could otherwise be reviewed and referred to the CJEU.

In regard to an arbitral tribunal’s own access to the procedure under Art. 267 TFEU, the Court conceded that also “joint Member State courts” such as the Benelux Court of Justice may refer questions to the CJEU. However, while the Benelux Court of Justice formed an integral part of the domestic court systems of the Benelux countries, such integration in domestic procedure was missing in respect of investment tribunals. Hence, such tribunal could not be regarded as a (joint) Member States’ court able to refer questions for preliminary ruling to the CJEU (para. 48).

On this continuous question the Court was strikingly brief. This is not all too surprising since there are good arguments not to deny an investment tribunal established on the basis of an intra-EU BIT access to the preliminary reference procedure. Indeed, one may wonder whether its earlier Miles Judgement (C-197/09) supports the CJEU’s finding. In the Miles Judgement, the dispute settlement body of the “European Schools” was “a body of an international organisation which, despite functional links which it has with the Union, remains formally distinct from it and from the Member States” (para. 42). In other words, the rulings of the European Schools’ dispute settlement body remain in its binding effect within the realm of this international organisation. This is the distinctive feature if compared to arbitral tribunals in an intra-EU context: the decisions of the latter tribunals directly bind the respondent Member State, and thus the tribunal decides in a binding fashion inter alia whether the exercise of governmental powers towards the investor was permissible or obligatory under EU law. Hence, there is a stronger link between investment arbitral tribunals and the Member States compared to the situation in the Miles Judgement.

Be that as it may, the CJEU seemed not overly eager to get into the questions that had followed from granting arbitral tribunals access to the preliminary reference procedure, in particular what to do when arbitral tribunals simply did not wish to refer questions to the CJEU although they would be bound to do so. One can only speculate whether the CJEU would have taken a different stance, if investment tribunals had previously tried to enter in a dialogue by referring a question to Court for preliminary ruling.

Four: Having excluded arbitral tribunals from the preliminary reference procedure, the Court had to address the question of whether the disruptive effects on the uniform application of EU law potentially flowing from an arbitral ruling could otherwise be contained.

The CJEU reasoned that, by its very purpose, an arbitral tribunal is largely placed outside the domestic court system of a Member State. The review of an arbitral award in a Member State’s court, which then could refer questions on EU law for preliminary ruling to the CJEU, is typically rather limited in scope (paras. 52-53). Such review, one should add, is also uncertain to the extent that the venue of arbitration would have to be within the EU’s territory in order to get in reach of a Member State’s court.

In this context, the CJEU differentiated commercial arbitral tribunals from arbitral tribunals established on the basis of a BIT. While a commercial arbitral tribunal’s jurisdiction stems from the consent of the disputing parties, an investment tribunal would ultimately derive its judicial powers from the State parties to the BIT (paras. 54-55). By providing for ISDS in their intra-EU BITs, the Member States themselves are substantially involved in disregarding the principle of autonomy of EU law: The adjudicative bodies so created bypass the mechanisms prescribed for in EU law to secure its uniform application (para. 56).

All this led the CJEU to conclude that ISDS in intra-EU BITs is not compatible with EU law. Having repeatedly cautioned in the past that exactly such outcome could stand at the end of the CJEU’s review of an ISDS clause in an intra-EU context someday, it would now be comfortable to join in the chorus of those praising the Court’s judgement. In fact, this might be just too comfortable in the light of another pressing question: What’s next?

Death and Afterlife, or What Will Change, and What Will Not

While the Court’s reasoning indeed largely deserves support, there are several legal and political issues begging answers: (1) What will happen to currently ongoing intra-EU investment arbitrations? (2) Will intra-EU investment arbitration indeed come to an immediate end after the CJEU’s judgement? (3) Why are intra-EU BITs still perceived by several observers as a crucial tool to address and mitigate political risk in some Member States? (4) What are the Judgement’s implications for the Energy Charter Treaty, recalling the large numbers of intra-EU investment arbitrations brought on its basis? (5) Are there any lessons learned from the Achmea Judgement for EU agreements with third countries, such as Canada, Singapore, or Vietnam?

The Achmea Judgement resolved the fiercely disputed legal question of compatibility of intra-EU investment arbitration with EU law. The Court is correct in stressing that ISDS as provided for in intra-EU BITs is at odds with the principle of autonomy of EU law. ISDS in an intra-EU context has potentially threatened the equal application of EU law throughout the Union’s territory. The present ISDS mechanism did not sufficiently secure the Court’s role as guardian of and last instance in interpreting and applying EU law.

Finito della musica? Not quite! One may in fact have some doubts whether arbitral tribunals, currently (or even in the future) adjudicating cases based on intra-EU BITs, automatically acquiesce the CJEU’s reasoning. Indeed, if the arbitral seat is located outside the EU or the arbitration is conducted on the basis of the ICSID Convention and, moreover, if sufficient assets of the defending Member State (for enforcement of the award) are also located outside Europe, no Member State court might get its hand on the arbitral award. In such situations it might be tempting for a witty tribunal to defy the CJEU ruling as one of a domestic court which cannot trump public international law. This has been frequently done so in the past and today the Advocate General can even be called sympathetic to this practice. If indeed this happens, it will be interesting to see how domestic courts outside the EU would deal with such situation.

However, if one wants to be on the safe side – safe meaning here to secure faithful adherence to the CJEU’s ruling – the European Commission would have to step up its efforts to get all intra-EU BITs terminated. It has been trying to convince the Member States for some years now without attaching particular urgency to the matter. In any event, the CJEU’s Achmea Ruling provides the European Commission with some tailwind. However, Member States are likely to continue to procrastinate.

Of Cowards and The Rule of Law. It seems that some Member States have been reluctant to abandon intra-EU BITs as they are still concerned about insufficient access to justice and due process in the courts of certain other Member States. The European Commission is seeking to address these issues by proposing a mediation mechanism. As such instrument lacks the teeth of a court judgment or arbitral award, it is obviously missing the point. Rather, alternatives to intra-EU BITs should be developed from existing functional equivalents in EU law, i.e. substantive standards of investment protection in EU law should be made more transparent by the way of a “restatement” of the pertinent legal practice. On principle, foreign investors should make use of functioning domestic courts. Where such institutions lack quality, the EU and its Member States should work towards their improvement. Meanwhile, a “safety net” should be provided for foreign investors in case domestic courts fail to dispense justice. This “safety net” may take the form of an arbitral forum administered by the Permanent Court of Arbitration or that of a ‘Unified Investment Court’; both integrated in the EU legal system. In any event, the EU cannot afford to cower away from the rule of law. The rule of law constitutes one of the foundations of the EU. The EU is built on law and it has hardly more than law to make true one of its grand promises given to its citizens, i.e. a Europe-wide level playing field for their economic and increasing social activities.

The Energy Charter Treaty – Party on? According to UNCTAD, investment disputes on the basis of the Energy Charter Treaty (ECT), which also contains an ISDS clause, account for about 20 percent of all known investment arbitrations globally by the end of 2016. Many of these cases constitute intra-EU disputes and, more recently, often relate to the withdrawal of government support schemes for renewable energy. Spain particularly has been subject to over 30 claims under this regime. The claims of the Swedish power company Vattenfall against Germany were both brought on the basis of the ECT.

Parties to the ECT are the EU, the Member States (Italy being a special case), and several third countries. Despite the involvement of the EU itself and third countries, from an EU law perspective, there seems to be no compelling reason why investment disputes between an investor from one Member State and another Member State based on the ECT should in result be treated differently from such addressed in the CJEU’s Achmea Judgement. So far, however, the European Commission has been utterly unsuccessful in convincing arbitral tribunals in ECT-based arbitrations of the special circumstances in intra-EU cases. Looking at the arbitrators’ arguments it is doubtful that this position will change in the light of the CJEU’s Achmea Judgement. As long as Member States’ courts do not get their hands on the awards – which is everything but certain, as explained above – and regularly annul them, intra-EU arbitration on the basis of the ECT may just go on. Again, a solution seems to lie beyond the Court’s Judgement, in the realm of public international law.

Nobody Else, Apart from The Blue Sky? When it comes to investment protection clauses in agreements of the EU with third countries, the Achmea Judgement seems to be only of limited guidance. The Court in sibylline fashion remarked that an international agreement of the EU that provides for “the establishment of a court responsible for the interpretation of its provisions and whose decisions are binding on the institutions, including the Court of Justice, is not in principle incompatible” with EU law, “ provided that the autonomy of the EU and its legal order is respected” (para. 57). The court’s treatment in Opinion 2/13 of the EU’s accession to the European Convention on Human Rights set the tone. As this one was not overly conciliatory, some caution is warranted.


On 16th February 2018, Love Rönnelid of Uppsala University successfully defended his Ph.D. thesis entitled „The emergence of routine enforcement of international investment law: Effects on investment protection and development“.

Professors Pål Wrange of Stockholm University and Celine Tan of Warwick University served as board members of the examination board, which was chaired by Professor Inger Österdahl of Uppsala University. The Ph.D. student’s first supervisor was Professor Iain Cameron of Uppsala University.

Professor Steffen Hindelang of the University of Southern Denmark at Odense, formerly Freie Universität Berlin, served as “opponent” (Faculty examiner) in the public defence.


This dissertation explores how the enforcement of international investment law became so powerful. It does so by tracing the different legal developments that have enabled the strength of the present regime. In this respect, the two aims of providing investment protection and that of fostering economic development are examined.

The dissertation includes a detailed examination of the history of investment-law. It then turns to analysis of central legal instruments, such as the New York and ICSID Conventions, as well as investment insurance agencies and a large network of bilateral investment treaties. Furthermore, key interpretations that have enabled investment law enforcement are surveyed. The dissertation attempts to find the roots of central justificatory concepts within investment law discourse, such as “the rule of law”, “depoliticization”, and “good governance”. Furthermore, several chapters look into how states have provided additional backing to the investment system through investment-insurance systems. These systems are treated somewhat in depth, as they have not been studied much in the academic literature. A number of case studies on investment insurance in action are included as well. These studies show that certain types of risk mitigation for investors also seem to constitute risk increases for host states. Moreover, the emergence and effects of third-party litigation funders in investment law is investigated. Finally, the dissertation attempts to survey the role of law with respect to previously successful development strategies. The outcomes of this examination overall indicate that standard types of BIT protection stand in conflict with potentially successful development strategies. For this reason, it seems the regime has contributed to investment protection, but not to development. The dissertation ends with some reflections on the role of lawyers in more powerful systems of global governance, such as investment law.

(c) Steffen Hindelang