The EPO published patent EP4277199A1 for Accenture Global Solutions Limited, a secure quantum swap system. The patent covers quantum cryptographic techniques involving quantum key distribution using quantum swap operations, classified under H04L 9/08 (cryptographic mechanisms), G06N 10/20 and G06N 10/40 (quantum computing), and H04B 10/70 (quantum communication). The designation covers all 44 EPO member and extension states including Germany, France, the UK, Italy, Spain, and others.

Patent publications do not impose compliance obligations or deadlines on third parties. Technology companies and cybersecurity firms working on quantum key distribution, quantum networking, or post-quantum cryptography should review the patent claims to assess potential licensing needs or to ensure their products do not infringe on the protected methods. Quantum technology developers may also reference this patent as prior art for distinguishing innovations.