Prosecution Insights
Last updated: July 17, 2026
Application No. 18/277,873

NOVEL BACTERIOPHAGE HAVING CLOSTRIDIUM PERFRINGENS-SPECIFIC BACTERICIDAL EFFECT AND ANTIBACTERIAL COMPOSITION COMPRISING SAME

Non-Final OA §101§112
Filed
Mar 20, 2024
Priority
Feb 23, 2021 — RE 10-2021-0024236 +1 more
Examiner
CORNELIUS, CLAIRE ADRIENNE
Art Unit
Tech Center
Assignee
CJ CheilJedang Corporation
OA Round
1 (Non-Final)
100%
Grant Probability
Favorable
1-2
OA Rounds
7m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 100% — above average
100%
Career Allowance Rate
1 granted / 1 resolved
+40.0% vs TC avg
Minimal +0% lift
Without
With
+0.0%
Interview Lift
resolved cases with interview
Typical timeline
2y 11m
Avg Prosecution
33 currently pending
Career history
26
Total Applications
across all art units

Statute-Specific Performance

§101
13.1%
-26.9% vs TC avg
§103
67.2%
+27.2% vs TC avg
§112
16.4%
-23.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1 resolved cases

Office Action

§101 §112
Notice of Pre-AIA or AIA Status The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . Claim Status Claims 13-22 are under consideration. Priority Receipt is acknowledged of certified copies of papers required by 37 CFR 1.55. Information Disclosure Statement The information disclosure statements (IDS) submitted on 08/18/2023 and 12/23/2024 are in compliance with the provisions of 37 CFR 1.97. Accordingly, the information disclosure statement is being considered by the examiner. Drawings The drawings are objected to because there are brackets around the figure labels, e.g., [FIG. 1]. For correction, remove the brackets, for example, FIG. 1, for all three figures. Corrected drawing sheets in compliance with 37 CFR 1.121(d) are required in reply to the Office action to avoid abandonment of the application. Any amended replacement drawing sheet should include all of the figures appearing on the immediate prior version of the sheet, even if only one figure is being amended. The figure or figure number of an amended drawing should not be labeled as “amended.” If a drawing figure is to be canceled, the appropriate figure must be removed from the replacement sheet, and where necessary, the remaining figures must be renumbered and appropriate changes made to the brief description of the several views of the drawings for consistency. Additional replacement sheets may be necessary to show the renumbering of the remaining figures. Each drawing sheet submitted after the filing date of an application must be labeled in the top margin as either “Replacement Sheet” or “New Sheet” pursuant to 37 CFR 1.121(d). If the changes are not accepted by the examiner, the applicant will be notified and informed of any required corrective action in the next Office action. The objection to the drawings will not be held in abeyance. Specification The abstract of the disclosure is objected to because of misspellings of the word therefore. Change “therefor” to “therefore” after additives. A corrected abstract of the disclosure is required and must be presented on a separate sheet, apart from any other text. See MPEP § 608.01(b). Claim Objections Claim 22 is objected to because of the following informalities: Claim 22: Change “claim 200” to “claim 20”. Appropriate correction is required. Claim Interpretation Regarding claim 14, “A method for preventing or treating infectious disease caused by Clostridium perfringens (CP)” is interpreted to only include disease directly caused by C. perfringens and not, for example, an opportunistic infection. Claim Rejections - 35 USC § 112 The following is a quotation of the first paragraph of 35 U.S.C. 112(a): (a) IN GENERAL.—The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor or joint inventor of carrying out the invention. The following is a quotation of the first paragraph of pre-AIA 35 U.S.C. 112: The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor of carrying out his invention. Deposit Claims 13-22 are rejected under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, as failing to comply with the enablement requirement. The claim(s) contains subject matter which was not described in the specification in such a way as to enable one skilled in the art to which it pertains, or with which it is most nearly connected, to make and/or use the invention. The invention appears to employ a specific strain of a bacteriophage (CJ_CP_20-15, Accession number KCCM12933P). Deposit information is required to meet enablement. It appears that a deposit was made in this application as filed as noted on page 3 of the specification. However, it is not clear if the deposit meets all of the criteria set forth in 37 CFR 1.801-1.809. Applicant or applicant's representative may provide assurance of compliance with the requirements of 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, in the following manner. SUGGESTION FOR DEPOSIT OF BIOLOGICAL MATERIAL A declaration by applicant, assignee, or applicant's agent identifying a deposit of biological material and averring the following may be sufficient to overcome an objection and rejection based on a lack of availability of biological material. Identifies declarant. States that a deposit of the material has been made in a depository affording permanence of the deposit and ready accessibility thereto by the public if a patent is granted. The depository is to be identified by name and address. States that the deposited material has been accorded a specific (recited) accession number. States that all restriction on the availability to the public of the material so deposited will be irrevocably removed upon the granting of a patent. States that the material has been deposited under conditions that access to the material will be available during the pendency of the patent application to one determined by the Commissioner to be entitled thereto under 37 CFR 1.14 and 35 U.S.C § 122. States that the deposited material will be maintained with all the care necessary to keep it viable and uncontaminated for a period of at least five years after the most recent request for the furnishing of a sample of the deposited microorganism, and in any case, for a period of at least thirty (30) years after the date of deposit for the enforceable life of the patent, whichever period is longer. That he/she declares further that all statements made therein of his/her own knowledge are true and that all statements made on information and belief are believed to be true, and further that these statements were made with knowledge that willful false statements and the like so made are punishable by fine or imprisonment, or both, under section 1001 of Title 18 of the United States Code and that such willful false statements may jeopardize the validity of the instant patent application or any patent issuing thereon. Alternatively, it may be averred that deposited material has been accepted for deposit under the Budapest Treaty on the International Recognition of the Deposit of Microorganisms for the purpose of Patent Procedure (e.g. see 961 OG 21, 1977) and that all restrictions on the availability to the public of the material so deposited will be irrevocably removed upon the granting of a patent. Additionally, the deposit must be referred to in the body of the specification and be identified by deposit (accession) number, date of deposit, name and address of the depository and the complete taxonomic description. Scope of Enablement Claims 14-16 are rejected under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, because the Specification, while being enabling for treating an infectious disease caused by Clostridium perfringens (CP), does not reasonably provide enablement for preventing any infectious disease caused by Clostridium perfringens. The specification does not enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to use the invention commensurate in scope with these claims. There are many factors to be considered when determining whether there is sufficient evidence to support a determination that a disclosure does not satisfy the enablement requirement and whether any necessary experimentation is “undue.” These factors include, but are not limited to: (A) The breadth of the claims; (B) The nature of the invention; (C) The state of the prior art; (D) The level of one of ordinary skill; (E) The level of predictability in the art; (F) The amount of direction provided by the inventor; (G) The existence of working examples; and (H) The quantity of experimentation needed to make or use the invention based on the content of the disclosure. In re Wands, 858 F.2d 731, 737, 8 USPQ2d 1400, 1404 (Fed. Cir. 1988). Here, the instant claims are broadly drawn to a method for preventing or treating infectious disease caused by Clostridium perfringens, the method comprising administering the pharmaceutical composition comprising a bacteriophage. It is noted that the term “preventing” was interpreted in an absolute sense to mean to always keep something from happening or arising. The level of skill in the art is high and would include, e.g., Ph.D. level scientists. Caly et al. (Caly)(See PTO-892: Notice of References Cited) evidences that prevention of necrotic enteritis is multi-faceted and not well understood (p. 2). Caly further evidences that treatment of the disease is difficult due to the rapid death that occurs due to necrotic enteritis. Koskella et al. (Koskella) (See PTO-892: Notice of References Cited) evidences that bacteriophages are highly specific, often only to a few strains within a species (p. 808). As such, there is no predictability for the absolute prevention of any infectious disease caused by Clostridium perfringens (CP), including necrotic enteritis. The Specification only exemplifies and reduces to practice the killing and growth inhibition of bacterium. The Specification offers no working examples or direction for preventing necrotic enteritis and other Clostridium perfringens related diseases in virtually any subject through administration of the claimed bacteriophage composition. In view of the foregoing, a vast quantity of experimentation, including extensive animal and clinical trials, would be required to use the invention based on the content of the disclosure. Taken together, the Specification does not enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to use the invention commensurate in scope with the claims. The following is a quotation of 35 U.S.C. 112(d): (d) REFERENCE IN DEPENDENT FORMS.—Subject to subsection (e), a claim in dependent form shall contain a reference to a claim previously set forth and then specify a further limitation of the subject matter claimed. A claim in dependent form shall be construed to incorporate by reference all the limitations of the claim to which it refers. The following is a quotation of pre-AIA 35 U.S.C. 112, fourth paragraph: Subject to the following paragraph [i.e., the fifth paragraph of pre-AIA 35 U.S.C. 112], a claim in dependent form shall contain a reference to a claim previously set forth and then specify a further limitation of the subject matter claimed. A claim in dependent form shall be construed to incorporate by reference all the limitations of the claim to which it refers. Claims 15, 18, and 22 are rejected under 35 U.S.C. 112(d) or pre-AIA 35 U.S.C. 112, 4th paragraph, as being of improper dependent form for failing to further limit the subject matter of the claim upon which it depends, or for failing to include all the limitations of the claim upon which it depends. The term “specific bactericidal activity” is an inherent function of the bacteriophage. As such it does not further limit the claim. Applicant may cancel the claim(s), amend the claim(s) to place the claim(s) in proper dependent form, rewrite the claim(s) in independent form, or present a sufficient showing that the dependent claim(s) complies with the statutory requirements. Claim Rejections - 35 USC § 101 35 U.S.C. 101 reads as follows: Whoever invents or discovers any new and useful process, machine, manufacture, or composition of matter, or any new and useful improvement thereof, may obtain a patent therefor, subject to the conditions and requirements of this title. Claims 13, 20-22 are rejected under 35 U.S.C. 101 because the claimed invention is directed to a judicial exception without significantly more. This judicial exception is not integrated into a practical application and the claims do not include additional elements that are sufficient to amount to significantly more than the judicial exception for the reasons set forth below. See MPEP § 2106 for analysis framework. The instant claims are broadly drawn to a bacteriophage and compositions comprising the same. As such, the instant claims are drawn to a composition of matter, which is a statutory category of invention (STEP 1: YES). The instant Specification evidences that KCCM12933P was isolated from fecal samples and was not altered (p. 17-19). As such, KCCM12933P is a naturally occurring bacteriophage. Moreover, the broadest reasonable interpretation of an additive recited by instant claim 20 encompasses, e.g., water. More specifically, with respect to claim 21, an excipient can also encompass water. Isolating bacteriophage and, in some embodiments, formulating with water in the case of an excipient would not, absent evidence to the contrary, result in any markedly different characteristics with respect to structure, function, or any other property to distinguish the claimed bacteriophage from their naturally occurring counterparts. Accordingly, the instant claims recite a natural phenomenon, i.e., naturally occurring bacteriophage, which is a judicial exception (JE) (STEP 2A, Prong One: YES). The instant claims are drawn solely to the JE, and not a method of using the JE for, e.g., a specific treatment or prophylaxis. As such the instant claims do no recite any additional elements that integrate the JE into a practical application (STEP 2A, Prong Two: NO). Since the instant claims are limited to only the JE, the instant claims do not recite any additional elements that amount to significantly more than the JE (STEP 2B: NO). In view of the foregoing, the instant claims do not constitute patent eligible subject matter under 35 U.S.C. §101. Conclusion No claims are allowed. Any inquiry concerning this communication or earlier communications from the examiner should be directed to Claire Cornelius whose telephone number is (571)272-0860. The examiner can normally be reached M-F, 0930-1700. Examiner interviews are available via telephone, in-person, and video conferencing using a USPTO supplied web-based collaboration tool. To schedule an interview, applicant is encouraged to use the USPTO Automated Interview Request (AIR) at http://www.uspto.gov/interviewpractice. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Thomas J. Visone can be reached at (571) 270-0684. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of published or unpublished applications may be obtained from Patent Center. Unpublished application information in Patent Center is available to registered users. To file and manage patent submissions in Patent Center, visit: https://patentcenter.uspto.gov. Visit https://www.uspto.gov/patents/apply/patent-center for more information about Patent Center and https://www.uspto.gov/patents/docx for information about filing in DOCX format. For additional questions, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /C.C./Examiner, Art Unit 1672 /M FRANCO G SALVOZA/Primary Examiner, Art Unit 1672
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Prosecution Timeline

Mar 20, 2024
Application Filed
Jun 03, 2026
Non-Final Rejection mailed — §101, §112 (current)

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Prosecution Projections

1-2
Expected OA Rounds
100%
Grant Probability
99%
With Interview (+0.0%)
2y 11m (~7m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1 resolved cases by this examiner. Grant probability derived from career allowance rate.

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