There is no universal definition of the term “parallel proceedings”, with the definition varying depending on the applicable legal regime.1 However, the International Law Association (ILA) helpfully describes it as:
“[P]roceedings pending before a national court or another arbitral tribunal in which the parties and one or more of the issues are the same or substantially the same as the ones before the arbitral tribunal in the Current Arbitration”.2
In the context of investment disputes, a similar working definition has been used by the UNCITRAL Secretariat for the term “concurrent proceedings” – albeit acknowledging that different legal bases exist for assessing what amounts to the same.3 ICSID Tribunals have also used a comparable approach for the purposes of Article 26 of the ICSID Convention (on ICSID arbitration being an exclusive remedy), considering that “proceedings are parallel… when such proceedings deal with the same subject matter as the ICSID dispute”.4
While parallel proceedings can occur in the context international commercial arbitration (e.g. if the existence or validity of an arbitration agreement is disputed, there may be concurrent court and arbitration proceedings), certain types of parallel proceedings have arisen and/or are prone to arise in investor-State arbitration due to features unique to it.
II. Types and causes of parallel proceedings in investor-State arbitration
In the investor-State arbitration context, there are several types of parallel proceedings which have arisen and/or are prone to arise. Three bear mention – each corresponding to a unique feature of investor-State arbitration. Some commentators have also identified other features which contribute to parallel proceedings in investor-State arbitration.5
In the first type, a situation may arise where different unrelated investors bring multiple proceedings against a State due to its identical or similar measures that affected each of them. This is due to the potentially extensive impact of actions by States (e.g. a change in policy with respect to certain economic sectors), which increases the likelihood of multiple unrelated claimants.6 This occurred when Argentina privatized several of its government-run industries in the early 1990s (giving rise to multiple cases concerning the scope and applicability of the “necessity clause” in its investment treaties),7 and when the Czech Republic cancelled the legal, tax and regulatory incentive regime that had previously been established in its photovoltaic sector from around 2010.8
The second type occurs where claims are brought against a State by different but related entities (e.g. a company as well as its shareholders) in respect of the same harm. Such types of parallel proceedings occur because investments are often structured through multiple legal entities, more than one of which may be entitled to bring claims against a State.9 A well-known example of this that of the parallel proceedings in CME Czech Republic B.V. v The Czech Republic and Ronald S. Lauder v. Czech Republic, which respectively concerned claims by a company and its controlling shareholder due to the acts of the Czech Republic’s Media Council in 1990s which affected the profitability of a broadcasting investment.10
The third type occurs where the same investor brings claims in respect of the same set of facts against the same State in multiple fora. This is caused by the multiple sources of law that may be applicable where a single investor is affected by a State’s conduct, and to which different dispute resolution procedures may be applicable. For example, a single measure from a State can give rise to both a contract claim in court proceedings, and a treaty claim in arbitration.11 Further, parallel proceedings of this type may be necessary as a well-known decision of the ICSID Ad hoc Committee (ICSID Case No. ARB/97/3) previously upheld a distinction between causes of action arising from treaties and contracts, confirming the need for a claimant to pursue parallel proceedings in certain situations in order not to forego any of its rights.12
III. Issues with parallel proceedings
There are several issues with parallel proceedings:
IV. Measures addressing parallel proceedings
For the former, these are preventive measures meant to exclude or narrow the situations in which parallel proceedings can arise. This includes the use of fork in the Road, waiver, or exclusive remedy provisions, which are meant to force a claimant to select to pursue their claim in a single fora if there are multiple available.18 An example is Article 26 of the ICSID Convention, which stipulates that “[c]onsent of the parties to arbitration under [the ICSID Convention] shall, unless otherwise stated, be deemed consent to such arbitration to the exclusion of any other remedy”.19 Other examples of preventive measures would be narrow definitions of investor or qualifying investments, or by using denial-of-benefits clauses, which can address the situation where multiple claimants are making a claim in respect of substantially the same loss.20 These preventive measures can then be relied upon when challenging the jurisdiction / admissibility of claims before one or more of the fora hearing the parallel proceedings, or for applications for provisional measures (e.g. to enforce the exclusivity of ICSID proceedings provided for in Article 26 of the ICSID Convention).21
As for the latter type of measure, these are meant to address the potential or actual parallel proceedings after the relevant claims have arisen. To “reduce” the number of parallel proceedings, it may be open for courts and/or tribunals to dismiss claims/proceedings by employing the doctrines of lis pendens or forum non conveniens,22 res judicata (if a decision has been rendered – see also Estoppel),23 and abuse of process (or abuse of rights).24 Alternatively, multiple proceedings may effectively be merged through (1) formal consolidation, subject to the applicable legal regime (including the arbitration rules) and/or the parties’ consent;25 and (2) in exceptional circumstances and even without formal consolidation, parties may also consider consenting to the parallel arbitration proceedings being heard together by the same tribunal.26 Finally, even if the multiple proceedings might not be eliminated, it may be open for the courts and/or tribunals to coordinate proceedings by implementing a stay of proceedings or by taking into account the proceedings and decisions of other fora.27
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