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Unilife granted U.S. patent for Unifill prefilled syringe

Unilife announced that the United States Patent and Trademark Office has granted the company U.S. Patent No. 8,167,837 for the Unifill ready-to-fill (prefilled) syringe. This key Unilife patent, which provides Unilife and its customers with a long-term competitive advantage into 2026, covers Unilife's proprietary technology for the integration of automatic and operator-controlled needle retraction features within the barrel of a prefilled syringe.