This client alert focuses on the ground-breaking Illumina/Grail case. After a brief overview of the procedural timeline of the case before the EC and the US FTC -and their seamless cooperation- the article focuses on two key features of the case: (i) the EC’s unlimited jurisdictional reach; and (ii) the EC’s extension of the innovation theory of harm to vertical mergers. The key takeaways for practitioners and clients are presented at the beggining of the Article.