455 F.2d 586 | C.C.P.A. | 1972
Lead Opinion
This appeal is from the decision of the Patent Office Board of Appeals affirming the rejection of claim 30 in appellants’ application serial No. 329,212, filed December 9,1963, for a cephalosporin-type antibiotic known as cephaloridine. No claim has been allowed. We reverse.
The Subject Matter Claimed
The appealed claim is drawn to a single compound, by structural formula, and reads:
30. A compound of the formula
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This compound is said to be a broad spectrum antibiotic, effective against both gram-positive and gram-negative micro-organisms, and to possess many other virtues not relevant here because of the nature of the rejection.
Appellants’ claim has been rejected as anticipated by U.S. patent No. 3,218,318, issued to Edwin H. Flynn November 16, 1965, on an application filed in the United States August 31, 1962, and available against appellants’ application by virtue of 35 USC 102 (e) as of its filing date. This reference discloses genetically a class of cephalosporin-type compounds having the following structural formula:
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in which R1, taken alone, is —OH, Ci-C8 acyloxy, or tertiary-amino,, R2 is —OH when R1 is —OH, R2 is —OH when R1 is.Ci-C8 acyloxy, R2 is —O- when R1 is tertiary-amino, R1 and R2, when .taken together, are —O—, n is zero or 1, R3 is Ci-C6 alkylene, and R4 is a hetferomono-cyclic radical containing O, S, and/or N. Appellants “conservatively” estimate that over 230,000 compounds (including, concededly, theirs) are embraced within this generic disclosure, and the board in turn conceded that, “If this were the only anticipatory disclosure in the reference,” the disclosure would be “too diffuse” to support a 102 rejection.
However, the board found: (1) that Flynn’s examples 4 and 10 “adequately disclose the exact precursors of the presently claimed compound”; (2) that Flynn’s statement that
Cephalosporin C is also readily converted into compounds of the cephalosporin Ca type by refluxing in aqueous solution with an excess of pyridine, for example, as described in Belgian Patent 693,777.
was adequate to teach how to convert the C-type precursors disclosed in examples 4 and 10 to the CA-type compound claimed by appellants; and (3) that Flynn’s statement that, “in general, those .compounds which possess the cepholosporin C nucleus are more effective anti-bacterially than those containing the cephalosporin G nucleus” provided the “motive * * * to follow this additional teaching * * Putting these three findings together, the board held that
*807 The indicated combination of Example 4 or 10 with * * * [the teaching of how to convert “Cephalosporin C * * * into compounds of the cephalosporin Ca tjrpe”] is not a matter of obviousness within the meaning of 35 U.S.C. 103 but of direct teaching within the four corners of the patent.
The effect of this holding, of course, was that the board did not have to look at the extensive objective evidence which appellants had offered to rebut any inference of obviousness which might be thought to arise from the teachings of the Flynn patent.
Opinion
The sole issue in this case is whether cephaloridine is “described" in the Flynn patent within the meaning of that word in 35 USC 102(e).
In this case we have no difficulty in deciding that the portions of the Flynn reference relied upon by the Patent Office do not identically' describe the claimed subject matter. As appellants point out, the compounds of Flynn’s examples 4 and 10 are the “exact precursors” of' appellants’ compound “only to the extent that appellants have discovered that cephaloridine will be formed if the acid [disclosed in example 10] is first selected and then carefully reacted with a particular tertiary amine which also must be selected.” (Emphasis in original) . Of course, it does appear that the “particular tertiary amine” to which appellants refer is pyridine, which is mentioned elsewhere in
The board, apparently recognizing the weakness of its position in attempting to arrive at an anticipation by combining the disclosures in examples 4 and 10 with the above-quoted teaching elsewhere in the patent of how to convert a particular, different cephalosporin O-type compound into cephalosporin CA-type compounds, postulates certain teachings which might have been in the reference patent any one of which, according to it, if present would have removed all doubt concerning the completeness of the anticipation.
Although the board declined to discuss four relatively recent decisions by this court in cases involving description requirements in various sections of the patent statute
Accordingly, we will not sustain the rejection on the ground on which it was made. Concerning the rejection as it is reformulated by the dissent, we express no opinion. It may be that the Patent Office should have relied upon the portions of Flynn on which the dissent relies, or it may be that they had very good reasons for not doing so. In any event, they did not rely on those teachings in Flynn, and appellants have therefore had no opportunity to comment thereon. We do not conceive that it is part of our duty to make better rejections for the Patent Office, even if we could be sure that we really were making a “better rejection,” nor do we think that it would be consistent with the requirements of due process for us to do so for.the first time on appeal, without notice to the affected party.
The decision of the board is reversed.
At one time appellants contended that Flynn was not an “enabling disclosure/’ In re LeGrice, 49 CCPA 1124, 301 F. 2d 929, 133 USPQ 365 (1962), but we gather that they have abandoned that contention on appeal, although there is still an ambiguous reference to LeGrice in their briefs.
Tlie parties argue, in essence, about whether the words “for example” in the sentence “Cephalosperin C is also readily converted into compounds of the cephalosporin Ca type by refluxing in aqueous solution with an excess of pyridine, for example, as described in Belgian Patent 593,777” refers to the word “pyridine” or the words “ais described.” Appellants argue that “it is to be stressed that pyridine is only being suggested as an example of the tertiary amine[s] suitable for the reaction with the prior art compound eephadosporin C,” while the solicitor seems to be taking the position that Flynn’s specification would be read as indicating that the Belgian patent was one place among many where those skilled in the art could learn how to react cephalosporin C with pyridine. While the matter is not free from doubt, we think it more likely that the sentence would be read in the former way because the presence of the word “type” after “Ca” and not after “C” suggests that one particular C-type compound (namely, cephalosporin C itself) can be changed into various CA-type compounds by refluxing it with an excess of the proper reactant. This interpretation of the controverted sentence is reinforced by the next sentence in Flynn’s specification, which is as follows :
The reaction is applicable in general to the tertiary amines, of which numerous examples are given above, yielding corresponding derivatives of the cephalosporin Ca type wherein the tertiary amine is attached to the methyl group in the 3 position of the thiazine ring, and forms an inner salt with the carboxyl group in the 4 position. ■
These postulations were contained in the following passage from the board’s opinion :
There would be no doubt of the completeness of the anticipation if,. paraphrasing column 3, lines 47 to 00, the following language were present at the end of each of Examples 4 and 10 :
“This compound is also readily converted into a compound of the cephalosporin CA type by refluxing in aqueous solution with an excess of pyridine, for example, as described in Belgian Patent 593,777.”
Likewise, there would be no question of the applicability of column 3, lines 47 to 50, if that sentence were introduced by the words “Any one of the compounds of Examples 1 to 15 is also readily converted into compounds of the CA type * * *” or “Any one of the herein specifically named cephalosporin C compounds is also readily converted into compounds of the CA type * * *”
In re Ruschig, 52 CCPA 1238, 343 F. 2d 965, 145 USPQ 274 (1965); In re Kalm, 54 CCPA 1466, 378 F. 2d 959, 154 USPQ 10 (1967); In re McLamore, 54 CCPA 1544, 379 F. 2d 985, 154 USPQ 114 (1967); and In re Ruschig, 54 CCPA 1551, 379 F. 2d 990, 154 USPQ 118 (1967) (Ruschig II).
Among the most recent of these are In re Ahlbrecht, 58 CCPA 848, 435 F. 908, 911, 168 USPQ 293, 296 (1971); In re Lukach, 58 CCPA 1233, 442 F. 2d 967, 969, 169 USPQ 795, 796 (1971); and Fields v. Conover, 58 CCPA 1366, 443 F. 2d 1386, 1391-92, 170 USPQ 276, 279-80 (1971).
Concurrence Opinion
concurring,
While I agree that the disclosure in the Flynn patent is insufficient to constitute an anticipation of the claimed invention, I cannot agree with the language of the principal opinion that for the rejection based on an anticipation to have been proper, “the Flynn reference must clearly and unequivocally disclose the claimed compound or direct those skilled in the art to the compound without any need for picking, choosing, and combining various disclosures not directly related to each other by the teachings of the cited reference.”
The test which determines whether an invention has been anticipated by a reference is whether the description of the invention in the reference is “sufficient to put the public in possession of the invention.” In re LeGrice, 49 CCPA 1124, 1131, 301 F. 2d 929, 933, 133 USPQ 365, 369 (1962), citing Curtis on Patents, 3d ed., Sec. 378 and Seymore v. Osborne, 78 U.S. (11 Wall.) 516, 555 (1870). See also In re Brown, 51 CCPA 1254, 329 F. 2d 1006, 141 USPQ 245 (1964); In re Sheppard, 52 CCPA 859, 339 F. 2d 238, 144 USPQ 42 (1964); In re Bird, 52 CCPA 1290, 344 F. 2d 979, 145 USPQ 418 (1965); In re Borst, 52 CCPA 1398, 345 F. 2d 851, 145 USPQ 554 (1965); In re Baranauckas, 55 CCPA 1204, 395 F. 2d 805, 158 USPQ 24 (1968); In re Hoeksema, 55 CCPA 1493, 399 F. 2d 269, 158 USPQ 596 (1968); In re Wilder, 57 CCPA 1314, 429 F. 2d 447, 166 USPQ 545 (1970); and In re Moore, 58 CCPA 1341, 444 F. 2d 572, 170 USPQ 260 (1971). I find it unreasonable to assume that Judge Rich and Judge Lane intend to overrule this long line of cases sub silentio. If what they intend is merely to rephrase the accepted test so as to simplify its application, they have missed the mark.
Tire more important difficulty with the position taken in the principal opinion is that it misdirects the inquiry. It directs the tribunal to analyze the structure of the reference rather than its content. The real question is not how logically the various disclosures in a reference are related to each other, it is rather what the reference fairly teaches to one of ordinary shill in the art, no matter1 how ineptly it does so. Of course, the more logically the reference is laid out the clearer will be its teachings and the easier will be the job of those who must interpret it. But the law requires us to determine whether the invention has been identically described, not whether it has been logically described by the reference.
The Flynn reference has been described in both the principal opinion and the dissent. I will therefore merely state what I would consider that reference fairly teaches to one of ordinary skill in the art. Flynn does disclose the cephalosporin C-type precursor of the instantly claimed CA-type compound. The precursor is one of approximately 38 C-type compounds specifically disclosed. Flynn teaches how C-type compounds can be converted to Cc-type compounds by heating with water under acid conditions, or converted to CA-type compounds by refluxing in an aqueous solution with an excess of a tertiary amine. Pyridine is specifically referred to as an example of a tertiary amine which will work, but a list of over 15 other tertiary amines is given. With regard to antibacterial effect, Flynn discloses that Cc-type compounds are not as good as C-type compounds, and C-type compounds are not as good as CA-type compounds. As pointed out by the dissent, Flymi considered the Cc-type and CA-type analogues of the specifically disclosed C-type .compounds to be some of the compounds “available in accordance with the present invention.”
I would not place as much weight as the dissent does on Flynn’s statement that tire Cc-type and CA-type analogues were considered within the scope of the invention. Such statements in the specification regarding the breadth of the invention are generally too speculative to be given great weight. In the instant case, all that statement does is focus some additional attention on Cc-type compounds and CA-type
. I disagree with the principal opinion on one last point. The opinion seems to suggest that we violate due process whenever we consider portions of a reference not specifically mentioned by the examiner or the board. I know of no requirement that the examiner and the'board must list the sentences in the reference upon which they rely, nor can I see any sense in imposing such a requirement. All of the disclosure of a reference must be considered for what it fairly teaches .one of ordinary skill in the art. In re Meinhardt, 55 CCPA 1000, 1004, 392 F. 2d 273, 276, 157 USPQ 270, 272 (1969). As Judge Smith aptly stated in Meinhardt:
[T]he board relied on the same [reference] as the examiner to sustain the rejection. Assuming arguendo that the board relied on a portion of the [reference] ignored by the examiner, this could not constitute a new ground of rejection in view of In re Azorlosa, 44 CCPA 826, 241 F.2d 939, 113 USPQ 156 (1957), which holds, in pertinent part, that it is proper for the court and necessarily, the board, to consider everything that a reference discloses.
In re Meinhardt, supra, 55 CCPA at 1008-09, 392 F. 2d at 280, 157 USPQ at 275. See also In re Halley, 49 CCPA 793, 296 F. 2d 774, 132 USPQ 16 (1961); In re Van Mater, 52 CCPA 1076, 341 F. 2d 117, 144 USPQ 421 (1965).
Dissenting Opinion
dissenting.
I cannot agree with the majority that cephaloridine is not “described” in the Flynn patent in the sense of 35 USO 102(e).
It cannot be said, of course, that cephaloridine per se is exflieitly named by Flynn, but a dear implicit description is sufficient. In re Baranauckas, 43 CCPA 727, 228 F. 2d 413, 108 USPQ 226 (1955). Reference to the Flynn disclosure will establish, I submit, that such a description exists in the present instance.
The principal opinion has set forth portions of the generic and more specific disclosure of Flynn relied on by the board. The class of cepha-losporin compounds disclosed generically by Flynn may be divided into several groups, of which the groups designated as cephalosporin C type and cephalosporin Ca type (cephaloridine is a Ga type) are of
The following examples, together with the [75] operating examples appearing hereinafter, will illustrate the types of compounds available in accordance with the present invention:
* * * * , % *
[There follows a list of 24 specific 7-acylamidocephalosporanic acids, i.e., cephalosporin O type compounds. As noted 'by the board, two of the 15 operating’ examples referred/ to, examples 4 and 10, describe the potassium and sodium salts of 7-(2'-thienylacetamido) eephalosporanic acid (the sodium salt is known commercially as “eephalothin”). Appellant reacts that particular eephalosporanic acid with the tertiary amine pyridine to obtain the- claimed cephalosporin type compound, cephaloridine.]
and the like, including the cephalosporin Ga and cephalosporin Ce analogues thereof. [Emphasis supplied.]
. There.can be no doubt from the above disclosure that Flynn regarded the cephalosporin Ca analogues of each of the mentioned cepha-losporin O type compounds to form an integral part of his disclosed invention. In particular, it is evident that Flynn does explicitly disclose the cephalosporin Ga analogues of Examples 4 and 10. As to how to obtain those Ca analogues from cephalosporin C type compounds, he states that compounds of the cephalosporin Ca class “can be obtained by applying to appropriate 7-acylamidoeephalosporanic acids the conversion procedures of Belgian Patent 593,717.” Flynn had earlier stated, as pointed out by the board and majority here, just whát those “conversion procedures” are, viz. that “Cephalosporin C is also readily converted into compounds of the cephalosporin Ca type by refluxing in aqueous solution with an excess of pyridine, for example, as described hi Belgian Patent 593,777.”
I think it is clear that Flymi directs one of ordinary skill in the art, who is interested in particular cephalosporin Ca analogues of the 37 or so cephalosporin C type compounds Flynn specifically discloses, to prepare them by reacting the appropriate 7-acylamido cephalo-sporanic acid with the particular tertiaryamine pyridine. Following those instructions, one of ordinary skill in this art would easily pre
From what has been said of Flynn, it should be evident that there is no need in this case for those skilled in the art to resort to picking and choosing various disclosures unrelated to each other 'by the reference teachings, as the principal opinion implies. On the contrary, the disclosures of cephalosporin C compounds, cephalosporin G& compounds, and how to make them are all interrelated by Flynn himself. It should also be evident that the reference itself contains the full equivalent of the board’s “postulations”, which are quoted in footnote 3 and later deprecated in the principal opinion. Finally, it should be evident that the rejection rationale as stated herein is substantially identical to — not a reformulation of — that expressed by the board.
The principal opinion also criticizes the board for reading into references “things that are not there.” My difficulty with that position stems from its disregard for the “things” — or “blaze marks” — that are there. In my opinion, the majority is groping for reversible error where none exists. As far back as 40 years, and over the years since, it has been a firm principle that this court would not reverse decisions of the tribunals below in highly complex areas of technology unless manifest error was shown. See, e.g., In re Wietzel, 17 CCPA 1079, 39 F. 2d 669, 5 USPQ 177 (1930); In re Bertsch, 30 CCPA 813, 132 F. 2d 1014, 56 USPQ 379 (1942); In re Stoll, 34 CCPA 1058, 161 F. 2d 241, 73 USPQ 440 (1947). Heedless to say, such error has not been shown here.
Although the majority would undoubtedly disclaim the notion, I cannot help but feel that it is resolving doubt on the issue presented in favor of the applicants. In doing so, this court is not doing the applicants or the public any favor. Rather it is bestowing on the applicants a license to litigate of dubious validity at a time when, it is reliably estimated, 80% of contested patents are being held invalid in other federal courts. And the other sad result here is to take from the public that which is already theirs by imposing on them a monopoly that should not exist. Appellants have given the public nothing it had not already been given by Flynn. I would remind my colleagues that patents are not like party favors to be passed out at random. The enabling statutes established under the Constitution clearly require more than appellants have offered as a quid pro quo to the public in exchange for the monopoly the majority awards them.
I find no error in the board’s decision, and would affirm.
For purposes here, cephalosporin Ca type compounds differ from cephalosporin C type compounds in the R1 substituent attached to the methyl group located at the 3 position of the basic cephalosporin (cephem) nucleus. The Ca type compunds have a tertiary amine attached- to that methyl group, whereas the C type compounds have an acyloxy group so attached. See the formula and definitions under “The Rejection” portion of the principal opinion. Cephaloridine has a pyridine radical attached to the 3-methyl group.
Belgian 593,777 does indeed disclose obtaining of “antibiotic substances which are transformation products of Cephalosporin C and are called Cephalosporin Ca compounds" by “treatment of Cephalosporin C in aqueous solution with a weak, tertiary base, for example pyridine, collidine or quinoline. If pyridine is used, the antibiotic obtained is called Cephalosporin Ca (pyridine).”