There have been some major changes in the B2B landscape recently. On May 24, 2019, two new acts bringing some major changes to Belgian competition law and the legal framework of B2B relationships were published in the Belgian Official Journal. Firstly, the Act of April 4, 2019, which introduced new rules for B2B relationships relating to unfair market practices, abuse of economic dependence and unlawful contractual terms. Secondly, the Act of May 2, 2019, which introduced a number of changes to the competition rules (i.e., in Book IV of the Code of Economic Law). All of these changes are now in effect. The new rules on unfair market practices entered into force on September 1, 2019, the rules prohibiting abuse of economic dependence on August 22, 2020. And more recently, on December 1, 2020, the new rules on unlawful contract terms entered into force.