On Monday 4/28/08 in Chicago, Baxter filed a new lawsuit against Fresenius Medical Care Holdings AG in U.S. District Court. The suit again involves Fresenius' 2008K dialysis machine. Baxter alleges that the Fresenius 2008K dialysis machine infringes on four US patents: patent number 7,264,730; patent number 7,303,680; patent number 7,318,892; patent number 7,351,340.
Baxter won a recent court decision on four different patents. These latest four patents in dispute, were all approved in the last year From ip.law360.com (registration required).
United States patent number 7,264,730
Abstract: A number of improvements relating to methods and apparatuses for kidney dialysis are disclosed. These include methods such as supplying a dialysis machine including a touch screen interface to a machine user and supplying to the machine user accessory devices to be used with the dialysis machine in operation.
United States patent number 7,303,680 and patent number 7,318,892
Abstract: A number of improvements relating to methods and apparatuses for kidney dialysis are disclosed. These include checking of dialysate bypass status using flow measurement; using a flow sensor to confirm the absence of ultrafiltration during bypass; automatic testing of ultrafiltration function by removal of a discrete volume from a portion of the dialysate flow path coupled with a pressure test of that part of the flow path; using a touch screen user interface; bar graph profile programming of ultrafiltration, sodium, and bicarbonate parameters; using a RAM card to upload treatment instructions to, and to download treatment data from, the machine; automatic setting of proportioning mode (acetate or bicarbonate) based on connections of concentrate lines; predicting dialysate conductivity values based on brand and formulation of concentrates; minimizing no-flow dead time between dialysate pulses; initiating operation in a timed mode from a machine power-off condition; preserving machine mode during machine power-fail condition; calibration scheduling and reminding; automatic level adjusting; and blood leak flow rate detecting
United States patent number 7,351,340
Abstract: A number of improvements relating to methods and apparatuses for kidney dialysis are disclosed. These include a method providing an apparatus for dialyzing to a consumer, with the apparatus including a controller for controlling a dialysate parameter, a delivery system for delivering the dialysate to a dialysate compartment of a dialyzer, and a user/machine interface having a touch screen to display an indicium corresponding to a parameter pertinent to operation of the apparatus for use in dialysis and to enable a user though touching the indicium to effect a change in the parameter. The method also includes providing supplies that are useable with the apparatus to the consumer.






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