In the underlying District of Delaware case, Pentair Südmo alleged that double seat valve products from SPX Corporation and SPX Flow Technology Systems, Inc. infringed Pentair Südmo’s US Patent No. 7,891,376, entitled “Double Seat Valve For Separating Media.” The district court litigation was stayed pending the USPTO’s reexamination of the ‘376 patent. The USPTO initially rejected 53 claims in the Pentair Südmo patent, but the PTAB reversed the Examiner on 52 of the 53 disputed claims. On April 8, the U.S. Court of Appeals for the Federal Circuit affirmed the PTAB. Pentair Südmo will now resume its infringement claims against SPX in the District of Delaware.
The Pentair Südmo appeal team included Wesley W. Whitmyer, Jr., Michael A. Lavine and Michael J. Kosma.
WHIPgroup has prevailed in another patent appeal before the Patent Trial and Appeal Board (PTAB). The invention relates to an adjustable piston with an inner plastic nut that helps withstand high frequency pulsing loads. The [Read More…]
Earlier this month WHIPgroup asked the Supreme Court to take up the important issue of whether a court can overlook factual allegations in a patentee’s infringement complaint at the pleading stage and find that the [Read More…]
WHIPgroup Successfully obtained patent allowance with an Appeal Brief. The invention is directed to an agitator ball mill, and has cams with specific ratios that improve mixing, cooling, and durability. The Patent Office rejected all [Read More…]
