NEC Corporation v. TCT Mobile Germany GmbH, TCL Communication Technology Holdings Ltd., TCL Industrial Holdings Co., Ltd., TCL Operations Polska Sp. z.o.o, TCL Deutschland GmbH & Co. KG, TCT Mobile Europe SAS, TCL Overseas Marketing Ltd.

NEC Corporation (the Claimant) brought patent infringement proceedings against multiple TCL entities (the Defendants) before the Local Division Munich of the Unified Patent Court, based on European patent EP 2 645 714 B1. The Defendants filed a counterclaim for revocation of the patent, and Defendant 1 (TCL Deutschland GmbH & Co. KG) additionally filed a counterclaim for a FRAND license offer. NEC had contributed the patent in suit to a pool for HEVC standard essential patents, which is administered by Access Advance LLC (the Applicant). As pool administrator, Access Advance is authorized to grant licenses under the pooled patents, contacts implementers, conducts license negotiations, and is obliged to take over and fulfil the licensors' FRAND obligations. Access Advance had attempted for several years to negotiate a pool license with the Defendants without success, and the parties had entered into a non-disclosure agreement (NDA) restricting disclosure of negotiation content to the Munich Regional Court I but not to NEC.

Access Advance applied to intervene in the proceedings in support of NEC, arguing it had a genuine legal interest because the Defendants were allegedly incorrectly arguing that Access Advance had not offered a FRAND license and were accusing it of violating Article 102 TFEU. Access Advance also sought access to the case file through NEC's representatives (who also represented Access Advance) and requested access to any confidential information for specified persons.

The Claimant did not object to the intervention. The Defendants opposed it, arguing that Access Advance had not established a legal interest under Rule 313 RoP, that its interest was merely economic and indirect, and that the intervention constituted an abuse of process designed to circumvent the NDA and European antitrust law restrictions. They contended that allowing the intervention would enable the sharing of commercially sensitive information in violation of Article 101 TFEU, and alternatively requested that the proceedings be stayed and a question referred to the Court of Justice of the European Union. The Defendants further argued that Access Advance should not have access to confidential information in the Statement of Defence.

The Court, presided over by Judge Ulrike Voß, admitted the intervention. It held that a patent pool administrator has a legal interest in the outcome of proceedings within the meaning of Rule 313 RoP. The Court rejected the argument that admission would violate Article 101 TFEU, finding that the applicant and a party have the possibility to exchange sensitive information under competition law in their written submissions, and that allowing an intervention as such does not constitute a violation of Article 101 TFEU. The Court held that once admitted, the intervener becomes a party and must be treated as such under Rule 315(4) RoP, and must be allowed access to the file to conduct the proceedings properly. However, where the court had already classified certain information as confidential and granted only limited access under Rule 262a RoP, the intervener could not be granted unlimited access to such information.

The Court ordered Access Advance to lodge its statement of intervention within the deadline for the Claimant's reply to the Statement of Defence and defence to the counterclaim for revocation. It permitted Access Advance to inspect the files through the Claimant's representatives, subject to detailed confidentiality restrictions. The Court imposed strict confidentiality obligations on specified individuals, including representatives Dr. Tilmann Müller and Dr. Volkmar Henke, with potential penalty payments of up to EUR 250,000 per culpable breach. The Court also established procedural arrangements for the filing and forwarding of documents through the CMS via the Claimant's representatives.