Question juridique clé
Whether the CAS had jurisdiction despite the appellant's challenge to the validity and entry into force of the licence agreements containing the arbitration clause.
Solution extraite
The CAS was competent because the agreements contained valid arbitration clauses, the appellant had in substance received and partly performed under the agreements, and no effective waiver of arbitration was shown.
Motifs extraits
The court accepted the arbitral finding that signed copies had been received and noted partial performance by both sides. A mere threat letter mentioning state courts did not amount to a tacit waiver of arbitration.