MATSUI MFG. CO., LTD.
Representative Director Hironobu Matsui

Judgment on our patent rights

Our company has been suing Kawata Mfg. Co., Ltd. for infringement of our patent No. 3767993 (name: powder mixing and fine powder removal method and device). The judgment of the appeal was handed down (judgment on March 27, 2014, Heisei 25 (ne) 10026). Similar to the first-instance decision of the Osaka District Court, the judgment acknowledged that Kawata Kawata Mfg. Co., Ltd., Kawata Mfg. Co., Ltd. 's manufacture and sale of the fluid hopper (see Figure 1) by Kawata Co., Ltd. is deemed to infringe our patent rights. It is an order to stop manufacturing and sales and to pay damages. In addition, we are dissatisfied with the amount of damages changed by the high court and the reason for it, and we have filed a petition to the Supreme Court to accept a final appeal.

For the reason of the ruling, it is an infringement act for the user to use the fluid hopper for mixing multiple materials such as virgin material and Regrind material (however, if it is used for only one material, it is infringing). not hit). Based on the ruling, we are offering the patent license free of charge to users who request it. Please apply (by September 30th).

In addition, Kawata Mfg. Co., Ltd., Ltd. discontinued sales of PRH-02 during the trial, and sells a modified hopper shown in Figure 2 below. Regarding this matter as well, we understand that we are infringing the patent, and we are separately filing a lawsuit with the Osaka District Court.

[Contact information from customers regarding this matter]
MATSUI MFG. CO., LTD. Intellectual Property Division
Phone: (072) 851-9770
Person in charge: Ohno, Takino