Samsung Galaxy S III: Center of LTE Patent War

Samsung Galaxy S III is the bestseller smartphone that was sold more than 40 million units worldwide.  In the US, Samsung Galaxy S III is now connecting its customers through 4G LTE networks. As the market dominance of Samsung Galaxy S III increases, it is also placed on the center of LTE patent war.

Ericsson filed patent infringement complaints against Samsung in ITC (US International Trade Commission) and the District Court for the Eastern District of Texas. The complaints claimed that, among other claims, Samsung Galaxy S III infringed its LTE patents. TechIPm’s essentiality analysis confirms that two patents claimed in the lawsuits are LTE standard essential patent candidates:

US6445917 (Mobile station measurements with event-based reporting): this patent provides a perfect mapping between the claims at issue and the LTE standard specification. It relates to measurements in the process of handover operation as described in TS 36.331 Sec. 5 and TS 36.300 Sec. 10.1.3.

US8169992 (Uplink scrambling during random access): this patent relates to contention based random access procedure utilizing CRC scrambling for RNTI as described in TS 36.213 Sec. 6, TS 36.300 Sec. 10.1.5, TS 36.321 Sec. 5.1, and TS 36.212 Sec 5.3.

InterDigital filed patent infringement complaints against Samsung in ITC and the District Court for Delaware. TechIPm’s essentiality analysis confirms that one patent claimed in the lawsuits is a LTE standard essential patent candidate:

US7941151 (Method and system for providing channel assignment information used to support uplink and downlink channels): this patent relates to providing channel assignment information to support uplink and downlink transmissions utilizing the DCI and CRC scrambling for RNTI as described in TS 36.213 Sec. 7 & 8, TS 36.300 Sec. 11.1, and TS 36.212 Sec 5.3.3.1.

For more information, please contact Alex Lee at alexglee@techipm.com .

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