Competition law Blog

Official Blog of the European Competition and Regulatory Law Review (CoRe)

The CoRe Blog is the interactive online platform for up-to-date analysis of EU competition law developments. It’s the blog companion of the quarterly double-blind peer-reviewed European Competition and Regulatory Law Review (CoRe). The CoRe Blog fills in the gaps that a quarterly can’t address: immediate updates and analysis of breaking news in EU competition.

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Microsoft III – Paving The Way To A Tying Trilogy?

This summer the European commission (finally) announced it will start a formal investigation against Microsoft following Slack’s complaint concerning the (abusive) tying or bundling or Teams to the Microsoft and Office 365 suites. Not long after, Microsoft came out with an official statement concerning the changes in its pricing and distribution strategy  of Teams it will introduce in order to […]

Slack v. Microsoft – more than just another tying case

The recent wave of claims against digital giants appears to have completed a circle with Slack’s recent claim against Microsoft for allegedly abusing its dominant position by tying Microsoft Teams to the Office 365 software package. One cannot deny the resemblance between this claim and the previous tying cases Microsoft had faced, however, upon closer look Slack’s claim is much […]
Anja Naumann

Blog Editor

LL.M., PhD, currently legal trainee at the Higher Regional Court of Berlin.

>> Anja’s CoRe Blog posts >>

Daniel Mandrescu
Blog editor Assistant Professor EU competition law, Europa Institute, Leiden University >> Daniel's CoRe blog posts >>
Friso Bostoen

Blog Editor

Assistant Professor of Competition Law and Digital Regulation, Tilburg University

Friso Bostoen is an assistant professor of competition law and digital regulation at Tilburg University. Previously, he was a Max Weber Fellow at the European University Institute. He holds degrees from KU Leuven (PhD, LLM) and Harvard University (LLM). Friso’s research focuses on antitrust enforcement in digital markets. His work has resulted in numerous international publications, presentations, and awards (including the AdC Competition Policy Award 2019 and the Concurrences PhD Award 2022). In addition, Friso edits the CoRe Blog and hosts the Monopoly Attack podcast.

>> Friso’s CoRe Blog posts >>

Nelly Stratieva

Head of Editorial Department and Data Protection Officer

Responsible for EStAL (European State Aid Law Quarterly), EPPPL (European Public Private Partnership Law Review) and CoRe (European Competition and Regulatory Law Review). Overseeing Lexxion Publisher’s privacy and data protection compliance.

Parsa Tonkaboni
Picture Rita Paukste
Rita Paukste

Former Blog Editor

Senior Associate, Motieka & Audzevicius PLP, Vilnius

>> Rita’s CoRe Blog posts >>

- slack ×

Microsoft III – Paving The Way To A Tying Trilogy?

This summer the European commission (finally) announced it will start a formal investigation against Microsoft following Slack’s complaint concerning the (abusive) tying or bundling or Teams to the Microsoft and Office 365 suites. Not long after, Microsoft came out with an official statement concerning the changes in its pricing and distribution strategy  of Teams it will introduce in order to […]

Slack v. Microsoft – more than just another tying case

The recent wave of claims against digital giants appears to have completed a circle with Slack’s recent claim against Microsoft for allegedly abusing its dominant position by tying Microsoft Teams to the Office 365 software package. One cannot deny the resemblance between this claim and the previous tying cases Microsoft had faced, however, upon closer look Slack’s claim is much […]

- slack ×

Microsoft III – Paving The Way To A Tying Trilogy?

This summer the European commission (finally) announced it will start a formal investigation against Microsoft following Slack’s complaint concerning the (abusive) tying or bundling or Teams to the Microsoft and Office 365 suites. Not long after, Microsoft came out with an official statement concerning the changes in its pricing and distribution strategy  of Teams it will introduce in order to […]

Slack v. Microsoft – more than just another tying case

The recent wave of claims against digital giants appears to have completed a circle with Slack’s recent claim against Microsoft for allegedly abusing its dominant position by tying Microsoft Teams to the Office 365 software package. One cannot deny the resemblance between this claim and the previous tying cases Microsoft had faced, however, upon closer look Slack’s claim is much […]

How to Submit a Blog Post

Do you want to share your analysis of a competition law topic? We invite you to submit your post on, for example: recent European, national or international judgments or legislation with relevance to EU competition law; new developments, publications, hot topics in EU competition law. The recommended length of the post is 500-2,000 words incl. references (endnotes). Your analysis will be published under the category ‘Guest Blog’.

Here’s how you can publish a post on the Blog as a guest author:

Step 1: Submit your draft.

Step 2: We at Lexxion will review your draft to make sure its content and quality fit the blog. If needed, they will suggest what improvements you should make.

Step 3: Once your draft has been finalised and accepted, we will publish your post.

Submit your guest blog post

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