l. When it is determined that a party suppressed or concealed after an actual reduction to practice, the party is not entitled to rely on that suppressed or concealed actual reduction to practice in a priority contest. Paulik, 760 F.2d at 1275, 226 USPQ at 227-28. Stated in other terms, once it is established that a party suppressed or concealed an actual reduction to practice, evidence related to that actual reduction to practice, in effect, becomes inadmissible. Evidence of another actual reduction to practice, taking place after suppression or concealment ceases, is admissible. Paulik, 760 F.2d at 1274, 226 USPQ at 226. m. A delay of 23-253 months was found to be unreasonable in Palmer v. Dudzik, particularly where personnel from the opponent's assignee visited the party's plant between the party's actual reduction to practice and the filing of a patent application. n. A delay of 27-28 months was found to be unreasonable in Young v. Dworkin where little, if any, activity was established between an actual reduction to practice and filing a patent application. o. A four year delay was found to be unreasonable in Peeler v. Miller even though it had not been established that any individual in the employ of the party's assignee had any actual intent to suppress or conceal. 3 The delay is characterized as being 23-25 months because an actual reduction to practice is said to have taken place in the Fall of the year (i.e., late September through late December). - 9 -Page: Previous 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 NextLast modified: November 3, 2007