Amazon counter sues IBM, claims ‘illegal use’ of its technology

In a strongly worded rebuttal, Inc. on Thursday countersued IBM Corp. The companies have charged each other with patent infringement.

The countersuit, filed in the U.S. District Court for the Eastern District of Texas, denies that infringes IBM patents, seeks to invalidate some IBM patents and charges IBM with infringing on some patents.

IBM illegally uses technology in WebSphere, a widely deployed application server, as well as in IBM information management services and products, claims. IBM and its customers thus infringe on patents, the Web retailer said.

The patents enable a Web site to recommend products to customers based on their browsing and buying histories. made the claims in response to a patent infringement suit that IBM filed in October.

In addition to the counterclaims, argues that some of the patents that IBM charges it with infringing are unenforceable. “IBM’s broad allegations of infringement amount to a claim that IBM invented the Internet,” the suit reads. “If IBM’s claims are believed, then not only must pay IBM, but everyone conducting electronic commerce over the World Wide Web (indeed, every Website and potentially everyone who uses a Web browser to surf the Web) must pay IBM a toll for the right to do so.” The suit calls that idea “nonsense.” also refutes IBM’s accusations that it dragged its feet replying to IBM’s initial attempts to negotiate over use of the patents. In reality, has already proved that some of IBM’s claims are without merit, it says. After IBM first approached in 2002, the U.S. Patent and Trademark Office (USPTO) found that IBM was concealing prior art, which can invalidate a patent. The USPTO then told IBM that the patents were not infringed, were not valid and did not require a license, said. also pointed out that IBM waited until 2002, seven years after started up and just as became profitable, to ask for payment for using the patented technology. This shows that “IBM simply wants to siphon off the profits that has only recently earned through the professional risks and human efforts, ingenuity, and investment expended by as it charted a new path in the Internet age,” the lawsuit reads. asks the court for compensation for IBM’s infringement as well as damages and legal costs.

At the time of IBM’s initial filing in October, patent experts observed that such infringement suits are risky because of the potential for judges to rule that a patent is invalid. They also said that the delay in making initial contact — seven years after launched — could work against IBM.

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