The opinion in support of the decision being entered today was not written for publication
and is not binding precedent of the Board.
Paper No. 18
UNITED STATES PATENT AND TRADEMARK OFFICE
____________
BEFORE THE BOARD OF PATENT APPEALS
AND INTERFERENCES
____________
Ex parte KWAN-MIN J. JEM
____________
Appeal No. 1999-1425
Application No. 08/393,321
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ON BRIEF
____________
Before ROBINSON, SCHEINER, and ADAMS, Administrative Patent Judges.
ROBINSON, Administrative Patent Judge.
DECISION ON APPEAL
This is a decision on the appeal under 35 U.S.C. § 134 from the examiner's final
rejection of claims 1 - 26, which are all of the claims pending in the application.
Claims 1 and 10 are illustrative of the subject matter on appeal and read as follows:
1. A mechanical method for disruption of plasmid-containing bacterial cells and
release of intact plasmid DNA, comprising the steps of:
a) passing liquid suspension of plasmid-containing bacterial cells through an
impinging-jet homogenizer with a single interaction chamber at an operating pressure of
about 750 to 4,000 psi, whereby the bacterial cells are disrupted and intact plasmid DNA
is released, producing a liquid that contains intact plasmid DNA and disrupted bacterial
cell debris; and
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