Memjet has filed a patent infringement lawsuit against Hewlett-Packard Company in the United States District Court for the Southern District of California. The lawsuit alleges infringement of eight Memjet patents related to its Waterfall printing technology.
Memjet’s lawsuit also claims it is entitled to recover damages resulting from HP’s use of patented technology in HP's PageWide printer products.
The HP PageWide products using the patented technology, according Memjet, include HP’s Pro X generation of office printers, the T-Series commercial presses, and PageWide XL series products. Memjet also points to HP statements around its intention to use PageWide Technology in future wide-format and 3D printers.
Memjet claims to hold several thousand U.S. and foreign patents in the page-wide inkjet printing space. Specifically, the company’s lawsuit asserts infringement of the following patents:
U.S. Patent No. 6,575,549, titled "Ink Jet Fault Tolerance Using Adjacent Nozzles"
U.S. Patent No. 6,880,914, titled "Inkjet Pagewidth Printer For High Volume Pagewidth Printing"
U.S. Patent No. 7,156,492, titled "Modular Printhead Assembly With A Carrier Of A Metal Alloy"
U.S. Patent No. 7,325,986, titled "Printhead Assembly with Stacked Ink Distribution Sheets"
U.S. Patent No. 8,662,636, titled "Inkjet Printhead Having Rows Of Printhead Segments"
U.S. Patent No. 8,678,550, titled "Printhead Assembly With Laminated Ink Distribution Stack"
U.S. Patent No. 8,696,096, titled "Laminated Ink Supply Structure Mounted In Ink Distribution Arrangement Of An Inkjet Printer"
U.S. Patent No. 9,056,475, titled "Inkjet Printer With Web Feed Maintenance Assembly"
Memjet Claims Patent Infringement by HP
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