Interference No. 102,622
on July 30, 1985; and, that such active exercise began in the
United States (see paragraph (6) of Paper Number 9).
The facts concerning Oates' conception are not
disputed by the parties. In 1987, at a time when Ms. Oates
worked for PPG in their laboratory in Barberton, Ohio, Ms.
Oates filed with the PPG patent department a memorandum of
invention (MOI) on December 2, 1987, directed to the
preparation of high refractive index optical plastic from
bisphenol AP (OR p.37-42; OX-3). The MOI was witnessed by
Paul A. Adair on December 2, 1987 (OR p.41) and receipt of the
MOI was acknowledged by Mr. Stein in a letter to Ms. Oates
dated December 15, 1987 (OR p.43-44; OX-4). Stein has
testified that he remembers having his secretary prepare the
December 15, 1987, letter to Ms. Oates acknowledging receipt
of the MOI by the patent department from the information
contained in the MOI using a PPG form (OX-12) specifically
designated for that purpose (OR p.161-170).
The MOI states that the invention was first
described in writing in "Notebook 6748 7-31-85". Notebook
6748 is Ms. Oates' notebook (OX-1) and it included an account
of her work from July 18, 1985, through June 2, 1986. On
pages 8 and 9 of notebook 6748 there is described an
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