MDPO Sues Extremity Medical Over the X-Ring Fixator System.

The complaint

The case is MDPO LLC v. Extremity Medical, LLC, No. 1:26-cv-27482 (S.D. Fla., Miami Division). MDPO filed the complaint on October 22, 2026, and demands a jury trial. The docket shows the case assigned to Chief Judge Cecilia M. Altonaga. The complaint describes MDPO as a Florida limited liability company based in Margate, Florida, that has been in business since 2009 and develops external fixators, devices orthopedic surgeons use to stabilize and align fractured bones or correct limb deformities. It describes Extremity Medical as a New Jersey limited liability company based in Parsippany, New Jersey, and alleges the two companies are competitors.

The complaint pleads personal jurisdiction under Florida's long-arm statute, Fla. Stat. 48.193, pointing to Extremity Medical's website, testimonials tied to Florida medical centers, its exhibit at a Florida conference, and its listing as an exhibitor at a 2027 Florida conference, and it alleges, on information and belief, that Extremity Medical offers and sells the accused product in the district. It pleads venue under 28 U.S.C. 1391(b)(2) and 1400(b). For venue it alleges that Extremity Medical previously held a Florida foreign limited liability company registration and alleges, on information and belief, that Extremity Medical maintains a regular and established place of business in the district through sales representatives or agents and stores and distributes inventory, including the accused product, from a location there.

The patents and asserted claims

The complaint asserts U.S. Patent 7,806,843, issued October 5, 2010; U.S. Patent 7,887,498, issued February 15, 2011; and U.S. Patent 8,251,937, issued August 28, 2012. Each is titled External Fixator Assembly, and the complaint describes the later two as continuation-in-part or continuation applications related to the first. It alleges MDPO owns the entire right, title, and interest in all three by assignment.

Count I alleges infringement of independent claims 1 and 19 and dependent claims 3 through 13, 21, 25, and 30 of the '843 patent. Count II alleges infringement of independent claim 1 and dependent claims 2 through 13 of the '498 patent. Count III alleges infringement of independent claim 1, dependent claims 2 through 4, and independent claim 6 of the '937 patent. Each count alleges direct infringement under 35 U.S.C. 271(a), literally or under the doctrine of equivalents. The complaint attaches preliminary claim charts for claim 1 of each patent as Exhibits D, E, and F.

The accused product

The complaint names Extremity Medical's X-Ring Fixator System as the accused product. It alleges the product includes a fixator assembly built for placement or use next to the ankle area, a support that holds at least one transfixion member in working engagement with a chosen part of the ankle area, and a base segment with at least one elongated contoured segment along which the transfixion member can be set at different places or orientations. It alleges Extremity Medical began making, using, selling, and offering the product for sale on or around August 13, 2025.

Knowledge and willfulness

The complaint alleges that Extremity Medical knew of the patents before it began selling the X-Ring Fixator System and that it applied for at least one patent in connection with the product. It alleges, on information and belief, that Extremity Medical searches USPTO records before releasing a product and that any patent application on the accused product lists at least one of the asserted patents as a reference cited. It alleges the infringement has been willful, wanton, and deliberate and, at a minimum, that Extremity Medical has known of the patents since service of the complaint.

The relief sought

MDPO asks for a judgment of infringement and willfulness, damages of no less than a reasonable royalty, trebled under 35 U.S.C. 284, an injunction under 35 U.S.C. 283, an accounting of sales, interest, costs, and attorneys' fees under 35 U.S.C. 285.

What to watch next

The clerk issued a summons to Extremity Medical on October 23, 2026. Watch for service, Extremity Medical's answer or a motion under Rule 12, and any challenge to venue. The case can end at any time, including by settlement or voluntary dismissal.