Only a select few ex parte reexaminations are filed by patent owners. Often the technology at issue is of particular importance, and the owner hopes to ensure that the patent is valid before pursuing potential infringers.
3M recently filed for reexamination for several patents covering field flattening lenses used in wide screen television (TV) technology. (Nipper). This may be a reaction to the recent patent tussle between Fujitsu and Samsung.
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