The European Patent Office published patent EP4235521A2 titled 'Error Corrected Variational Algorithms' on March 25, 2026. The patent was granted to Google LLC with inventors Babbush and Fowler, covering quantum algorithm error correction techniques classified under G06N 10/20 and G06N 10/70. The patent designates all EPC contracting states including Germany, France, the UK, and other European jurisdictions.

Technology companies and researchers developing quantum computing applications should review the patent claims to assess potential infringement risks or licensing opportunities. Patent practitioners should monitor for any applicable opposition period.