Application of Leslie Frederick Wiggins

397 F.2d 356, 55 C.C.P.A. 1356

• Court: Court of Customs and Patent Appeals
• Decided: October 10, 1968
• Docket: Patent Appeal 7864
• Status: Published

Opinion

CLARK, Associate Justice.

This appeal is from the decision of the Board of Appeals which affirmed the examiner’s rejection of claims 13-15 in appellant’s application 1 as unpatentable under 35 U.S.C. § 103 in view of a literature article by Wolf and Braun (Wolf). 2 After careful consideration of “the differences between the prior art and the claims at issue,” Graham v. John Deere Co., 383 U.S. 1, 17, 86 S.Ct. 684, 694, 15 L.Ed.2d 545 (1966), taken as a whole and specifically in light of the teachings of Wolf, we conclude that appellant’s claims comply with the conditions for patentability set forth in section 103 and reverse the decision of the board.

The Application and Claims

The subject matter of the application relates to the discovery that particular chemical compounds — 1:3 benzoxazine2:4-dione and its alkali metal salts— exhibit analgesic activity and alleviate headache pain in humans. According to the specification, a given compound may be administered by placing it in “any of the customary pharmaceutical forms” such as tablets, capsules, powders, • pills, ampouled solutions for parenteral administration, suspensions for oral administration and the like. The amounts of the compound which may be administered are governed by its activity and toxicity, the specification stating:

The toxicity of the compound is such that doses of up to 1000 milligrams may be administered orally say three times a day, whereas its activity is such that doses as low as 10 milligrams each may be employed.

Claims 13-15 read:

13. A pharmaceutical preparation in dosage unit form adapted for administration to obtain an analgesic effect, comprising, per dosage unit, an analgesically-effective non-toxic amount within the range from about 10 to about 1000 milligrams of at least one compound selected from the group consisting of l:3-benzoxazine2:4-dione and pharmacologically acceptable alkali metal salts thereof, and a pharmaceutical diluent.

14. A pharmaceutical preparation in accordance with claim 13 in a form adapted for oral administration.

15. A pharmaceutical preparation in accordance with claim 14 in the form of a tablet.

Certain other claims, directed to a method of obtaining an analgesic effect by administering the compounds recited in claim 13, were allowed by the examiner.

The Prior Art

The Wolf article relied on by the board discloses that, prior to appellant's discovery, the identical compound employed by appellant, l:3-benzoxazine-2:4-dione (termed “O 2 ” by Wolf) was known to protect mice against the effects of X-ray radiation. Wolf describes the method by which he ascertained such activity:

The investigations were carried out on mice weighing 16-18 g. who were submitted to radiation in groups of 20 ****** The protective substance was injected in the animals by means of an i. p. [intraperitoneal] administration 10 minutes before the radiation. The dose employed was 150 mg/kg [of mouse weight]. Trials in order to demonstrate a protection after an oral administration were unsuccessful. * * *

It appears Wolf also investigated other properties or activities of “02,” reporting that:

In contrast to Nembutal “O2” has no central depressant or anaesthetic properties. In other respects, also, the substance is pharmacologically inert. * * *

.That,, in .pertinent part, is the scope and content of the prior art reflected in the record before us which, in the board’s view, renders the compositions of the. claims obvious and. frames the issue before us. Subsumed is a determination of the correctness of the board’s findings that none of the claim limitations relating to analgesic use, the diluent, dosage unit form, the tablet form and the dosage range are of any patentable significance.

Differences in Subject Matter

Appellant posits four main differences between the subject matter of his claims and the disclosure of Wolf, some of which differences are rather tenuous, others more substantial. Summarized they are:

(1) The claims require the presence of a “pharmaceutical diluent” as part of the compositions, whereas Wolf does not explicitly mention the use of such a diluent or carrier in administering “O2” to mice.

(2) The claims state that the composition is in a “dosage unit” form, a form “adapted for oral administration” and the form of a “tablet,” respectively, whereas Wolf, it is said, discloses no particular form in which “02” was administered to mice intraperitoneally.

(3) The claims recite the intended use of the claimed composition, viz. “to obtain an analgesic effect,” whereas Wolf, dealing as he does only with agents protective against X-rays, does not remotely suggest such a use for his disclosed compositions. Indeed, appellant’s composition is a “quick acting analgesic when given by the oral route” while Wolf found “02” had “no central depressant or anaesthetic properties * * * the substance is pharmacologically inert” and “oral administration was unsuccessful.”

(4) The claims require a particular amount of active ingredient per dosage unit, viz. “an analgesically-effective nontoxic amount within the range from about 10 to about 1000 milligrams” of the dione or its salts, whereas Wolf neither employs nor suggests the use of such amounts.

With respect to the first difference posed by appellant, the examiner thought that, in view of Wolf’s disclosure that “02” possesses what the examiner regarded as “pharmaceutical activity,” it “would be obvious to include this active pharmaceutical agent with any pharmaceutical diluent,” citing In re Rosicky, 276 F.2d 656, 47 CCPA 859 (1960). The board went one step further, stating that “The combination of the compound and a diluent or vehicle we consider is shown by Wolf.” In view of appellant’s apparent agreement 3 with the board on the matter, it needs no further discussion.

The remaining three differences between the claims and the prior art are best discussed together. Appellant argues that no composition containing 10-1000 milligrams of “02” per dosage unit for use as an analgesic is disclosed or made obvious by Wolf. As an abstract proposition, that argument is undoubtedly true, for it seems most unlikely that one of ordinary skill in the art would consider preparation of a pharmaceutical composition containing the amounts of “02” recited in the claims to be obvious for the purpose appellant sets forth, particularly in view of Wolf’s statement that “O2 has no central depressant or anaesthetic properties” and is “pharmacologically inert” in other respects also.

Nevertheless, any agreement by us with that contention is not necessarily dispositive of the issue. More to the point is whether Wolf suggests or makes obvious a composition containing, in addition to a suitable vehicle, 10 to 1000 milligrams of “02” per unit dosage for the particular purpose of radiation protection. Were Wolf, to describe or render obvious such a composition containing those amounts of “02”, that composition, of course, would not appear to differ in any material manner from the composition of appellant’s claims, no matter to what ultimate use it would be put. 4

Here, however, the claimed composi tion — certain amounts of “02” plus a diluent — does appear to be new. We say that notwithstanding repeated references by the board as well as the solicitor’s brief to appellant’s attempt to patent the “old composition” shown by Wolf, 5 for there seems to be no explicit description by Wolf of the amounts of “02” employed by appellant in his composition. In that regard, Wolf discloses

that he employed “02” in amount of 150 milligrams/kilogram of mouse weight for purposes of radiation protection. Since each mouse is said to weigh 16-18 grams, simple calculation establishes that about 2.5 milligrams of “02”, presumably in some suitable vehicle or carrier, was administered either intraperitoneally or orally to each mouse. A unit dosage containing 2.5 mg “02” falls short of the 10-1000 mg amounts recited in the present claims.

We find nothing in Wolf which suggests that he or any other person of ordinary skill in the art would regard the preparation or administration to mice or humans of compositions containing sufficiently greater amounts of “02” as to fall within the scope of the appealed claims to be obvious. Nor apparently did the examiner and board— at least their opinions reflect no such finding. 6

In summary, then, Wolf found that “02” was not a “depressant” or “anaesthetic” ; that it was otherwise “pharmacologically inert”; and that it was unsuccessful on oral application. When considered with Wolf’s apparent failure to suggest appellant’s claimed dosage amounts, such a triad of basic negative findings, rather than making appellant’s discovery obvious, seems to us to have the direct opposite effect. Indeed, it would have had the general effect of deterring further experimentation. In United States v. Adams, 383 U.S. 39, 86 S.Ct. 708, 15 L.Ed.2d 572 (1966), a somewhat similar situation existed in the prior art. There the prior art suggested Adams’ combination “was both dangerous and inoperable.” Id. at 50, 86 S.Ct. 708, 714. Despite that, and other prior art teachings that open circuit batteries which heated in normal use were not practical, and that wet batteries “were successful only when combined with electrolytes detrimental to the use of magnesium,” Adams’ battery — using the condemned elements — was successful, much to the surprise of the experts. The Court commented :

These long-accepted factors, when taken together, would, we believe, deter any investigation into such a combination as is used by Adams. This is not to say that one who merely finds new uses to old inventions by shutting his eyes to their prior disadvantages thereby discovers a patentable innovation. We do say, however, that known disadvantages in old devices which would naturally discourage the search for new inventions may be taken into account in determining obviousness. At 52, 86 S.Ct. at 714.

Section 103 of the 1952 Patent Act provides that a patent may not be obtained “if the differences between the subject matter sought to be patented and the prior art are such that the subject matter as a whole would have been obvious at the time the invention was made to a person having ordinary skill in the art.” In light of the background of the subject matter here, the content of the prior art and the differences between it and appellant’s claims, we cannot say that the discovery of appellant was obvious to one skilled in the art. It was certainly not obvious to Wolf and Braun and no other references are before us. Rather than “an old compound in an old vehicle” as characterized by the boards we find that, while appellant’s claimed' compositions are based on an old com-? pound, it is obviously a new vehicle on a) new thoroughfare.

The decision is reversed.

Reversed.

1 . Serial No. 125,647, filed July 21, 1961, and entitled “Pharmaceutical Preparations.”

2 . Appearing in Arzneimittel Borschung, Vol. 9, pages 442-3 (July 1959) and abstracted in Chemical Abstracts, Vol. 53, page 20570e (1959).

3 . Appellant candidly states:

The compound is a solid, and it can be presumed (the Patent Office Board of Appeals did) that one skilled in the art would prefer to administer the corn-pound to mice in a carrier or vehicle, since this is a conventional type of composition for intraperitoneal administration.

4 . In sucli eventuality, appellant’s discovery of the analgesic properties of “02” and of a composition containing it could properly be claimed only as a method or process of using that compound or composition in accordance with the provisions of 35 U.S.C. §§ 100(b) and 101. See In re Hack, 245 F.2d 246, 44 COPA 954 (1957); In re Thuau, 135 F.2d 344, 30 COPA 979 (1943), and cases cited therein. As this court stated in In re Lemin, 326 F.2d 437, 51 CCPA 942 (1964):

Appellants are clearly correct in demanding that the subject matter as a whole must be considered under 35 U.S.C. § 103. But in applying thestatutrmu test, the ...differences over. the prior art..must_be..morel substantial Ihan _fi._ statement, of. the intended use, atu.old . composition. Counsel for appellants produced a bottle containing a composition at oral argument. It seems to us that the composition in the bottle would be exactly the same whether the user were told to cure pneumonia in animals with it (as in Rothmann) or to promote plant growth with it (as here). The directions on the label will not change the composition of the contents. We therefore fail to find any unobvious distinction in the claim phrase “suitable for promoting growth of plants and for protecting them from damage by imrasitic pathogens.”

The claim limitation “a parasitic plant pathogen inhibiting and plant growth promoting amount” could be a valid distinction, assuming the art knows what range of amounts is intended by the phrase, only if it differed from the amount that those having knowledge of the prior art here toould employ for the prior art purpose. Here there is no indication that the plant protecting amount is any different from a therapeutic amount that one skilled in the art of Rothmann would select. It, therefore, does not appear that the amount limitation distinguishes the composition from that which would be obvious from the prior art. (Emphasis supplied)

5 . The board stated, somewhat ambiguously we think:

In substance, claims 18, H and 15 merely call for an old compound in an old vehicle or diluent. We see no patentable significance in the proposed use to which the product will be put as- an analgesic. The combination of the compound and a diluent or vehicle we consider is shown by Wolf et al. The intended new use does not make this old composition new and patentable. In re Thuau, 30 COPA 979; * * * 135 F.2d 344 ; 57 USPQ 324.

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Appellant has discovered a new use for an old composition and suitable claims to the method of using it, claims 10, 11 and 12, have been allowed in accordance with 35 U.S.C. 101. The word “process” is defined in 35 U.S.C. 100(b) as, including a new use of a known composition of matter. However, we do not consider that this known composition of matter can become new and patentable by including therewith a statement of intended use or a conventional diluent or by putting it up in dosage unit form as recited in the claims. (Emphasis supplied).

We gather that the board must have meant that a combination of “02” and diluent per se was not new. Were the claimed composition in fact described by Wolf in its entirety, there would s.eem to have been little need for a rejection under § 103. Reliance upon that statutory provision necessarily implies, by its own terms, that the subject matter “is not identically disclosed or described” by Wolf.

6 . Neither the examiher nor board found, for example, that one of ordinary skill in the art, in carrying out the teachings of Wolf, would as a matter of course prepare a composition containing larger amounts of “Og” in a carrier or vehicle, then divide it into aliquot portions, containing 2.5 milligrams “O2” for administration to each of the 20 or 60 mice in each group tested. Nor did they determine whether such a stock composition would necessarily correspond in any manner to those claimed here. Under the circumstances, we think it inappropriate that we speculate on what one of ordinary skill might or might not do. In re Cofer, 354 F.2d 664, 53 COPA 830 (1966).