EPO published patent application EP2024066018A1 for Ant Blockchain's cross-chain smart contract calling method and apparatus. The invention addresses interoperability between blockchain networks by providing a technical mechanism for smart contracts on one blockchain to invoke and execute contracts on other chains. The designated states cover all current EPO member states including Germany, France, UK, Italy, Spain, and other EU/EEA countries. The IPC classifications indicate applications in both digital security and financial/capital markets transactions.

Technology companies and financial institutions developing blockchain products should review this patent publication to assess potential freedom-to-operate considerations and competitive landscape implications. Companies with cross-chain or blockchain interoperability solutions should evaluate whether their technology falls within the patent's scope. No immediate compliance actions are required as this is a publication rather than an enforceable regulatory requirement.