In this case, Ericsson alleged that AsusTek had infringed its European Patent No. EP 2 819 131 B1 by selling products containing certain infringing modules. Ericsson sought declarations of patent infringement, liability for damages, and orders for damages and detailed accounting by AsusTek. AsusTek counterclaimed for the revocation of the patent, arguing it was invalid due to added matter, lack of novelty, and lack of inventive step.

The case involved a complex history of filings, counterclaims, and procedural negotiations, including cost agreements between the parties. Ericsson had previously sought an injunction, which was denied.

Ultimately, the court issued its decision, assessing both the infringement claims by Ericsson and the revocation counterclaims by AsusTek, significantly revolving around legal interest, technical infringement, and the responsibilities tied to domain content.