On appeal from a decree holding patent to Schmidt and Krieger, No. 1,628,279, and patent to Kriegеr and Zahn, No. 1,803,906, each in the diazo-type copy paper art, invalid, we affirmed, Kalle & Company et al. v. Multazo Co., Inc.,
Promptly upon the announсement of our decision in consideration of the fact that the appellant is a German corporation, a disclaimer was filed in the patent office limiting the claims by excluding from their scope “diazo' compounds being formed from amino compounds containing at least one other amino group, which compounds may not be regarded as diazo anhydrides, in a broad sense, and which compounds may not be presumed to have been produced from diazonium compounds with elimination of water.”
Having so limited their claims to meet the conclusion announced by us that there was insufficient disclosure, the appellants pray for a rehearing on the “16” patent, and for оther reasons pray also a rehearing upon the “18” patent. The successful appellеes oppose the granting of the petition with a challenge to the validity of the disclaimer оn the ground: (1), that there-was no inadvertence, accident or mistake-in the framing or acceрtance of the original claims as required by 35 U.S.C.A. §§ 65r 71; (2), that there was unreasonable neglect and delay in entering tlie disclaimer; (3), that the disclaimer is improper in that it makes the patent cover a nеw combination; (4), that it can have no effect because both plaintiffs did not join in disclaiming.
We have given careful thought to-the several briefs in support of and iiv opposition to the petition. Wе are of the view that there was no unreasonable neglect and delay in entering the disclaimer and that the contention to that effect is-not supported by the case of Ensten v.
There remains the question of inadvertence, accident or mistake. This is a question of fact. Van Meter v. United States, 2 Cir.,
In this situation we think the question of the validity оf the disclaimer because of accident, inadvertence or mistake, and the validity of the “16” рatent, as modified by the disclaimer, if valid, should first be determined by the District Court which has not had an opportunity to do so; that the case should be opened and sent back to that court with directions to сonsider and determine the question upon the evidence heretofore taken, in conneсtion with such further evidence as either or both of the parties may see fit to introduce. N. O. Nelson Mfg. Cо. v. F. E. Meyers & Bro. Co., 6 Cir.,
In view of this conclusion our opinion heretofore announced will be amended revеrsing the decree below, insofar as it held the “16” patent invalid, and remanding the cause for a consideration of the validity of the disclaimer and of all claims in that patent in suit amended by the disclaimеr, if valid, without prejudice to the rights of the appellant to again appeal from an advеrse decision, or the rights of the appellee to again urge upon us grounds of invalidity, other than in respect to disclosure.
The court perceiving no error in its original decision upon the “18” patent, the petition for rehearing in respect to it is denied.
