The Patent Trial and Appeal Board said that some challenged claims of Danco Inc.'s patent that relates to toilet fill valve systems are unpatentable as obvious over prior art, in an inter partes review by Fluidmaster Inc. The board found that some claims are obvious over prior art titled “Water Silencing and Saving Means for Ball Cock Valve Assembly In Toilet Flush Tank,” “Toilet Flushing Device,” and collectively referred to as “Quick Connection Art.”
This summary was produced by Bloomberg Law Automation and edited by Bloomberg Law staff.
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