To find the key IPR holders for the Smartphone UI (User Interface), a keyword search of the global patent data bases (USPTO, EPO, and WIPO (PCT)) has been performed.
As of April 23 2010, the key IPR holders and their IPR share for the Smartphone UI are as follows:
1. Patents for multi-touch technology (total of 120 patent applications and issued patents)
Apple (99, 82%), LG (3, 2%), Samsung (3, 2%), Hong Fu Jin Precision (2, 1%), and RIM (2, 1%)
2. Patents for optical joystick technology (total of 34 patent applications and issued patents) Philips (10, 29%), Samsung (8, 23%), Crucial Tec (5, 15%), and NXP B.V. (5, 15%)
3. Patents for projected capacitive touch screen technology (total of 213 patent applications and issued patents)
RIM (184, 86%), Sony Ericsson (6, 3%), 3M (6, 3%), and Nokia (3, 1%)
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