The weekly litigation news digest is live. Subscribe now
Patent No. EP3918974 (titled "Computerized Refraction And Astigmatism Determination") was filed by Opternative on Mar 3, 2014. The application was issued on Dec 13, 2023.
A system for determining and providing corrective lenses prescriptions to patients without requiring a doctor visit. The system uses computerized screens to enable patients to select inputs to determine their astigmatism, sphere, and cylinder measurements. The inputs are made by selecting points on diagrams, adjusting figure sizes, and answering questions about near/far vision. The measurements are sent to doctors for review and approval. The system allows patients to determine and receive their own lens prescriptions via screens instead of going to an eye doctor's office.
Latest UPC cases involving this patent.

Patent oppositions filed by competitors challenge the validity of a granted patent. These oppositions are typically based on claims of prior art, lack of novelty, or non-obviousness. They are a key part of the process for determining a patent's strength and enforceability.
The dossier documents provide a comprehensive record of the patent's prosecution history - including filings, correspondence, and decisions made by patent offices - and are crucial for understanding the patent's legal journey and any challenges it may have faced during examination.
Date
Description
Get instant alerts for new documents