Zogenix announced the issuance of a new patent, US 8,734,384, from the United States Patent and Trademark Office. The patent covers the biphasic pressure profile utilized by the company's proprietary DosePro Needle-free Delivery System. The specific pressure profile covered is essential for reliable subcutaneous injection by needle-free technology. In addition to covering the current DosePro platform, the patent is also expected to cover a DosePro platform in development intended for delivery of larger dose volumes.