Document QX7Lz6MXLQNp05py1z2G2G7pk

Abhz, Morf, Gritschncdcr. von Wittgenstein. Postfach 86 01 Me: ces & Martin Hi< House 52i lolborn Loi 5SE Eni M. Gritschneder Dipl.'Pb>*S. A. Frhr. von Wittgenstein Dr. DJpI.-Chcm. CHUTES PPoossttaannsscchhrriifftt / Postal Address Postfach 86 01 09 D - 8000 Munchen 86 duly 26, 1991 German Part of European Patent 0 244 180 (Appln. 87 303 681.8 ) E.I. du Pont de Nemours and Company DuPont Ref: CH1371 Your Ref: OR ___ Dear Sirs, Referring to your letter of duly 2, 1991, we would like to inform you that we have reported as Attorneys of Record to the German Patent Office. We are enclosing (1) 2 copy/ies of our letter of Jan. 22, 1991 to the German Patent Office; (2) our debit note in duplicate; (3) 2 copy/ies of the German Patent Office communication dated July 11, 1991 according to which the following file number has bean allocated to the German part: P 37 71 910.6-08 . Please note that this number has always to be quoted in future correspondence with the German Patent Office. The duration of the patent is 20 years as from.the date of filing the European application. The 20th year ends on April 27, 2QQ7. The usual German annuities are to be paid-for maintaining the German part of the European patent. The fees become due on April 30 and can be paid without fine within two months (whereafter, if payment is not made, the Patent Office will issue a reminder that payment is possible with fine within a further 4 months term calculated from the last day of the month of receipt of the reminder). The first national German annuity to be paid is the one for the 6th year dueApril 3Q, 1992. ) x | Unless we hear from you to the contrary, we will pay that annuity in compliance with your instructions on or shortly before the due date and report to DuPont. j 1| We are looking forward to receiving your authorization to attend to the payment of this annuity in good time before the due date. We note that we are not responsible for paying the further annuities, i.e. we will not be sending routine reminders in this respect. Encs. cc. nDuPont / Legal Department Very truly yours Munchen - Bogenhauscn PoschingerstraSe 6 TeJefon: (089) 98 32 22 Telex: 5 23 992 (abitz d) Telefax (II & 111 - automat.): (089) 98 40 37 Telegramm: Chemindus Munchen 33 N 30948