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However, the protection granted by the Directive is not absolute. Article 1(2)(b), bolstered by Recital 11, concedes that secrecy will take a back seat if the ‘Union or national rules require trade secret holders to disclose, for reasons of public interest, information, including trade secrets, to the public or to administrative or judicial authorities for the performance of the duties of those authorities’. 

With regard to trade secrets in general, in the Microsoft case, the CJEU held that a refusal by Microsoft to share interoperability information with a competitor constituted a breach of Article 102 TFEU.

Although trade secrets remained protected from the public and competitors, Google had to disclose Page Rank parameters to the Commission as the administrative authority for the performance of its investigative duties. It is possible that a similar examination will take place in the recently launched probe in Amazon’s treatment of third-party sellers. 

For instance, in February 2020, the District Court of the Hague held that the System Risk Indication algorithm that the Dutch government used to detect fraud in areas such as benefits, allowances, and taxes, violated the right to privacy (Article 8 ECHR), inter alia, because it was not transparent enough, i.e. the government has neither publicized the risk model and indicators that make up the risk model, nor submitted them to the Court (para 6 (49)).

Article 22 still remains one of the most unenforceable provisions of the GDPR. Some scholars (see, e.g. Wachter) question the existence of such a right to explanation altogether claiming that if the right does not withstand the balancing against trade secrets, it is of little value.

In 2019, to ensure competition in the platform economy, the European Parliament and the Council adopted Platform-to-Business (P2B) Regulation. To create a level playing field between businesses, the Regulation for the first time mandates the platforms to disclose to the businesses the main parameters of the ranking systems they employ, i.e. ‘algorithmic sequencing, rating or review mechanisms, visual highlights, or other saliency tools’ while recognising the protection of algorithms by the Trade Secrets Directive (Article 1(5)).

The recent Guidelines on ranking transparency by the European Commission interpret the ‘main parameters’ to mean ‘what drove the design of the algorithm in the first place’ (para 41).

The German Interstate Media Law that entered into force in October 2020, transposes the revised Audio-Visual Services Directive, but also goes well beyond the Directive in tackling automated decision-making that leads to prioritization and recommendation of content.

This obligation to ‘explain the algorithm’ makes it the first national law that, in ensuring fairness for all journalistic and editorial offers, also aims more generally at diversity of opinion and information in the digital space – a distinct human rights dimension. If the provision proves enforceable, it might serve as an example for other Member States to emulate. 

Lastly, the draft DSA grants the newly introduced Digital Service Coordinators, the Commission, as well as vetted researchers (under conditions to be specified) the powers of data access to ensure compliance with the DSA. The core of this right, however, is undermined in Article 31(6), which effectively allows the platforms to refuse such access based on trade secrecy concerns. 

This shows that although addressing algorithms in a horizontal instrument is a move in the right direction, to make it enforceable, the final DSA, as well as any ensuing guidelines, should differentiate between three tiers of disclosure: 1) full disclosure – granting supervisory bodies the right of access, which may not be refused by the IP owners, to all confidential information; 2) limited disclosure – granting vetted researchers the right of access limited in time and scope, with legal guarantees for protection of trade secrecy; and 3) explanation of main parameters – granting individuals information in accessible language without prejudice to trade secrets.