Global LED manufacturers such as Japan and Osram are accused of patent infringement

May 26, 2010 patent licensing company Bluestone Innovations Texas LLC in east Texas court made two series of cases against accused global LED maker Osram (OSRAM), Nichia (Nichia) and many other manufacturers, patent infringement, to draw Prohibition orders and damages.

The first case:

The company accused by the defendant OSRAM and the US branch of OSRAM Sylvania, as well as the semi-high-brightness LED chip manufacturer SemiLEDs in Idaho (a subsidiary of Taiwanese manufacturer Xuming Optoelectronics SemiLEDs). Involving patent infringement US 6,448,102, including LED semiconductor chip module G6SG produced by OSRSM, of which US 6,448,102 is transferred from XEROX CORPORATION.

The second case:

Alleged defendants Taiwan LED manufacturers Jingdian, Yuyuan, Guanglu, Taigu Optoelectronics, as well as Japanese LED manufacturers Nichia, Showa Denko, Toyoda Gosei produced InGaN LED chip design and manufacturing technology infringement, of which US6,163,557 also transferred from XEROX CORPORATION.

Table 1. Basic data of patent litigation cases: Bluestone Innovations announces multiple LED companies

Name of the case

Bluestone Innovations Texas LLCv. Epistar et al

Bluestone Innovations Texas LLC vs OSRAM GmbH et al

Announcement date

May 26, 2010

May 26, 2010

plaintiff

Bluestone Innovations Texas LLC

Bluestone Innovations Texas LLC

defendant

  • Epistar Corporation, (晶电)
  • Formosa Epitaxy Inc, (璨圆光电)
  • Huga Optotech Inc, (Guangguang Optoelectronics)
  • Nichia Corporation,
  • Nichia America Corporation,
  • Showa Denko KK,
  • Showa Denko America Inc,
  • Tekcore Co Ltd, (Taigu Optoelectronics)
  • Toyoda Gosei Co Ltd,
  • Toyoda Gosei North America Corporation,
  • Toyoda Gosei Texas LLC
  • Walsin Lihwa Corporation
  • OSRAM Gesellschaft mit beschrankter Haftung,
  • OSRAM Opto Semiconductors GmbH & Co,
  • OSRAM Sylvania Inc
  • SemiLEDs Inc (旭明光电)

Case number

2:2010cv00171

2:2010cv00172

Litigation court

Texas Eastern District Court

Texas Eastern District Court

Litigation attribute

Intellectual Property - Patent

Intellectual Property - Patent

Claim patent

US6,163,557
Fabrication of group III-V nitrides on mesas

US6,448,102
Method for nitride based laser diode with growth substrate removed

Patent transfer

Transfer from XEROX CORPORATION

Transfer from XEROX CORPORATION

Disputed product

InGaN LED epitaxial chip, GaN LED chip

LED semiconductor chip module G6SG produced by OSRSM

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