Patent Disclaimers:
GlaxoSmithKline recently filed several dedications on its patents relating to treatment of migraine headaches. The patents cover Imitrex, generically known as Sumatriptan Succinate. A dedication is a document signed by a patent owner filed in the U.S. Patent and Trademark Office giving up all patent rights. Usually, the patent owner will only file a dedication for patents that are believed to be invalid. Months ago, Glaxo filed suit against Dr. Reddy Labs to prevent generic production of Imitrex.
Re-Examination:
Alpha and Omega Semiconductor has requested that the Patent Office conduct an ex parte reexamination of Siliconix Inc.’s patent on a method for making planar vertical channel DMOS structures. (U.S. Patent 4,767,724). This move is simply the next step in the ongoing patent litigation between the two semiconductor manufacturers. A settlement conference is scheduled for November 17th, 2004.