Prosecution Insights
Last updated: October 25, 2026
Application No. 18/702,620

ANTICANCER AGENT, PRODRUG OF ANTICANCER AGENT, METHOD FOR KILLING CANCER CELL IN VITRO, CANCER TREATEMENT METHOD, AND CANCER TREATMENT DEVICE

Non-Final OA §112
Filed
Apr 18, 2024
Priority
Oct 20, 2021 — JP 2021-172003 +1 more
Examiner
LANDSMAN, ROBERT S
Art Unit
Tech Center
Assignee
Taiyo Service Inc.
OA Round
1 (Non-Final)
81%
Grant Probability
Favorable
1-2
OA Rounds
0m
Est. Remaining
94%
With Interview

Examiner Intelligence

Grants 81% — above average
81%
Career Allowance Rate
1039 granted / 1277 resolved
+21.4% vs TC avg
Moderate +13% lift
Without
With
+13.0%
Interview Lift
resolved cases with interview
Fast prosecutor
2y 2m
Avg Prosecution
65 currently pending
Career history
1322
Total Applications
across all art units

Statute-Specific Performance

§101
3.6%
-36.4% vs TC avg
§103
19.4%
-20.6% vs TC avg
§102
13.4%
-26.6% vs TC avg
§112
40.3%
+0.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1277 resolved cases

Office Action

§112
DETAILED ACTION 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 . 1. Formal Matters A. In the response filed 8/25/26, Applicants elected Group II without traverse. Therefore, this restriction is deemed proper and is made FINAL. B. Claims 1-22 are pending. Claims 1-13 and 20-22 are withdrawn as being drawn to non-elected inventions. Claims 14-19 are the subject of this Office Action. 2. Specification The listing of references on pages 1-2 of the specification is not a proper information disclosure statement. 37 CFR 1.98(b) requires a list of all patents, publications, or other information submitted for consideration by the Office, and MPEP § 609.04(a) states, "the list may not be incorporated into the specification but must be submitted in a separate paper." Therefore, unless the references have been cited by the examiner on form PTO-892, they have not been considered. 3. Claim Objections Claims 14-19 are objected to since they depend from claim 1. 4. Claim Rejections - 35 USC § 112(a) – written description 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. Claims 14-19 are rejected under 35 U.S.C. 112, first paragraph, as containing subject matter which was not described in the specification in such a way as to reasonably convey to one skilled in the relevant art that the inventor(s), at the time the application was filed, had possession of the claimed invention. These are genus claims. Proton beam therapy was well-known in the art at the time of the instant invention (Fukumitsu et al.) as was the anticancer effect of 5-aminolevulinic acid (Jalili-Nik) and 5-fluorouracil. However, other than an anticancer agent comprising a substance causing specific accumulation of nitrogen-15 in a sample, the specification and claims do not indicate what distinguishing attributes are shared by the members of the genus. Thus, the scope of the claims includes numerous structural variants, and the genus is highly variant because a significant number of structural differences between/among genus members is permitted. Other than 5-aminolevulinic acid and 5-fluorouracil, the specification and claims do not provide any guidance as to what changes should be made. Structural features that could distinguish compounds in the genus from others in the nucleic acid or protein class are missing from the disclosure. No common structural attributes identify the members of the genus. The general knowledge and level of skill in the art do not supplement the omitted description because specific, not general, guidance is what is needed. Since the disclosure fails to describe the common attributes or characteristics that identify members of the genus, and because the genus is highly variant, 5-aminolevulinic acid and 5-fluorourocil, alone, are insufficient to describe the genus. One of skill in the art would reasonably conclude that the disclosure fails to provide a representative number of species to describe the genus. Thus, Applicant was not in possession of the claimed genus at the time the invention was made. 5. Prior Art of Interest Not Relied Upon Hojo et al. teach the in vitro use of 5-fluorouracil followed by proton beam therapy. However, Hojo does not use the N15-labeled drug and the Examiner cannot make a prima facie case to use this radiolabeled variant. 6. Conclusion No claim is allowable. Advisory information Any inquiry concerning this communication or earlier communications from the examiner should be directed to ROBERT S LANDSMAN whose telephone number is 571-272-0888. The examiner can normally be reached M-F 8 AM – 6 PM (eastern). 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, Joanne Hama, can be reached at 571-272-2911. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of an application may be obtained from the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see http://pair-direct.uspto.gov. Should you have questions on access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). /ROBERT S LANDSMAN/Primary Examiner, Art Unit 1647
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Prosecution Timeline

Apr 18, 2024
Application Filed
Oct 06, 2026
Non-Final Rejection mailed — §112 (current)

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Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

1-2
Expected OA Rounds
81%
Grant Probability
94%
With Interview (+13.0%)
2y 2m (~0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1277 resolved cases by this examiner. Grant probability derived from career allowance rate.

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