U.S. Patent No. 9,962,340 B2 issued on May 8, 2018, for “Device and method for the transdermal delivery of cannabidiol.” It was issued to applicant Medipatch Inc., of San Diego, California, and inventors Ludwig J. Weimann, of San Diego, California. The assignee is Life Tech Global, LLC, of Irvine, California. The specification discloses a drug delivery device in the form of a transdermal patch for delivery of CBD. The device is reservoir-patch that houses the CBD deliverable mixture and a hydrophilic membrane coated with a silicone skin adhesive. There are several specific embodiments also disclosed in the specification. The independent claims are directed to the CBD transdermal delivery device (claim 1) and the method of delivery (claim 14). The transdermal delivery device does not specify an ailment that the patch is directed to, but generally discloses an effective drug delivery of CBD into the body without gastric side effects found with oral administration.
Figure 1 of the drawings illustrates the invention. It is a cross-section of the transdermal drug delivery device (i.e., patch) (20). It contains a reservoir (26) containing the CBD deliverable. Further, there is a hydrophilic, porous membrane (24) with its two surfaces (34, 36), and a skin adhesive (30), with a release liner (28) and its two surfaces (29, 31).
The International Patent Classification is A61K (preparations for medical, dental or toilet purposes (i.e., methods specially adapted for pharmaceutical products into particular physical form).
Medipatch’s product development focuses on transdermal drug deliveries. Life Tech Global is a drug delivery company focused on transdermal patches, topicals, and sublingual oral deliverables. Part of their product portfolio is centered on CBD-related deliverables. Although transdermal patches are not necessarily new, transdermal patches specific for CBD-delivery are. For now, the patent landscape for new cannabis delivery products still favors the boutique company. More cannabis technology is expected to begin the patenting process as various federal agencies become friendlier to adult-use cannabis, both in research and recreational use.
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