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VitalStim and Three Others Assert Infringement of Four Patents Against eSwallow USA

VitalStim, LLC (VitalStim), ESD, LLC (ESD), DJO, LLC ((DJO), and Empi, Inc. (Empi) filed suit on December 3, 2012, against eSwallow USA, LLC (eSwallow) asserting infringement of four patents:  U.S. Patent 5,725,564 (the ‘564 Patent), U.S. Patent 5,987,359 (the ‘359 Patent), U.S. Patent 6,104,958 (the ‘958 Patent), and U.S. Patent 7,280,873 (the ‘873 Patent) (collectively, the Dysphagia Patents).  The plaintiffs allege that they, among themselves, either own or exclusively license the patents, or are sublicensed by the exclusive licensee.

VitalStim alleges its own status as an innovator in the development of safe and effective treatments for patients suffering with difficulty swallowing or dysphagia.  The VitalStim® Therapy System is presented on its website as follows:


The complaint alleges that the managing principal of eSwallow was a former distributor of the  VitalStim® Therapy System.  In additional to the implication of knowledge through that former relationship, VitalStim alleges that the User Manuals for VitalStim products covered by the Dysphagia Patents have been continuously marked with three of the four patents since 2005 in compliance with 35 USC § 287.[1]

VitalStim alleges that eSwallow has infringed the Dysphagia Patents with “an electrical pharyngeal neuromuscular stimulator, identified as the eSwallow Dysphagia Therapy Unit Models 9950/9960.  The following image of a Stimulation Unit appears on the eSwallow website:

eSwallow allegedly uses, offers, for sale and sells the infringing products and educates its distributors and the general public on the use of the product thereby inducing purchasers to infringe.  Direct infringement is alleged against eSwallow for all four patents and eSwallow is further alleged to have indirectly infringed the ‘564, ‘359, and ‘873 Patents.

The case is VitalStim, LLC, et. al v. eSwallow USA, LLC., No. 1:12-cv-4163-JOF, filed 12/03/12 in the U.S. District Court for the Northern District of Georgia, Atlanta Division, assigned to U.S. District Judge J. Owen Forrester

[1]The ‘873 Patent is a method patent.
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About this Author

Kirk Watkins, Womble Carlyle, Business Arbitration Attorney, Patent Preparation Lawyer

Kirk manages and tries complex business litigation, patent, trademark and international arbitration disputes. He believes thorough preparation and strategic theme development result in successful trials or settlements.

Kirk particularly enjoys patent suits and relishes the opportunity to learn new technology to teach to the court and jury. He eagerly anticipates the challenge of cross-examining an opposing expert. Preparation on the technology, confidence and experience, and being quick on your feet are key ingredients to a successful cross....