Monday, May 9, 2011

Linex v. HP, Apple et al.

On May 6, 2011, Linex Technologies, Inc. filed a complaint for patent infringement in D.Del. against HP, Apple, Aruba, Meru Networks, and Ruckus Wireless.  Linex has been involved in other suits, including one against Nortel, Motorola and others filed in 2005, and two more against Belkin, Cisco, and others filed in the Eastern District of Texas in 2007.

The patents at issue are U.S. Patent Nos. 6,757,322,  Space diversity and coding, spread-spectrum antenna and method, and RE42,219Multiple-input multiple-output (MIMO) spread spectrum system and method.

Both patents list Donald L. Schilling as inventor.  A slightly dated bio can be found here.

Regarding Apple:

On information and belief, the Apple products presently known to Linex that use MIMO and therefore infringe the Asserted Patents include the MacBook®, MacBook® Air, MacBook® Pro, Airport Extreme, and Time Capsule (“Apple Accused Products”). ... Defendants make, use, sell, offer to sell, and/or import into the United States for subsequent sale or use the Accused Products identified above, which infringe, directly, and/or indirectly, claims 9 and 10 of the ’322 patent. ... Defendants make, use, sell, offer to sell, and/or import into the United States for subsequent sale or use the Accused Products identified above, which infringe, directly, and/or indirectly, claims 97, 107-109, 119-121, 131-133, 144, and 145 of the ’219 patent.

Claim 9 of the '322, for reference:

9. A system for receiving data having symbols, with the data having symbols demultiplexed into a plurality of subchannels of data, with the plurality of subchannels of data spread-spectrum processed as a plurality of spread-spectrum-subchannel signals, respectively, with the plurality of spread-spectrum-subchannel signals radiated, using radio waves, from a plurality of antennas as a plurality fo spread-spectrum signals, respectively, with the plurality of spread-spectrum signals passing through a communications channel having multipath, thereby generating, from the plurality of spread-spectrum signals, at least a first spread-spectrum signal having a first channel of data arriving from a first path of the multipath, and a second spread-spectrum signal having a second channel of data arriving from a second path of the multipath, comprising:

  • a plurality of receiver antennas for receiving the first spread-spectrum signal and the second spread-spectrum signal;
  • a plurality of despreading devices for detecting, at each receiver antenna of the plurality of receiver antennas, the first spread-spectrum signal and the second spread-spectrum signal, as a first plurality of detected spread-spectrum signals and a second plurality of detected spread-spectrum signals, respectively; and
  • a plurality of combiners for combining, from each receiver antenna of the plurality of receiver antennas, each of the first plurality of detected spread-spectrum signals, thereby generating a first combined signal, and for combining, from each receiver antenna of the plurality of receiver antennas, each of the second plurality of detected spread-spectrum signals, thereby generating a second combined signal.

Claim 97 of the '219, for reference:

97. A receiver system for recovering data conveyed in data symbols by a plurality of different signals transmitted on separate carrier waves from a single source over a wireless channel, said signals being differentiated by different codes conveyed along with said signals, comprising:

  • plural receiving antennas for receiving said signals;
  • receiver circuitry connected to each receiving antenna for demodulating said received signals and for separating said signals by detecting said different codes conveyed in said signals;
  • combiner circuits for combining received data symbols transmitted in signals with the same code and received by different receiving antennas, thereby forming plural streams of combined data symbols; and
  • a multiplexer for multiplexing data derived from said plural streams of combined data symbols to form a single stream of data.

 

[notice of filing via DocketNavigator]

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