Prosecution Insights
Last updated: August 06, 2026
Application No. 18/599,314

RHODAMINE-METHYLENE BLUE DERIVATIVE FLUORESCENT PROBE AND PREPARATION METHOD AND APPLICATION THEREOF

Non-Final OA §112
Filed
Mar 08, 2024
Priority
Aug 11, 2023 — continuation of PCTCN2023112569
Examiner
SHIM, DAVID M.
Art Unit
Tech Center
Assignee
Henan Polytechnic University
OA Round
1 (Non-Final)
58%
Grant Probability
Moderate
1-2
OA Rounds
6m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 58% of resolved cases
58%
Career Allowance Rate
51 granted / 88 resolved
-2.0% vs TC avg
Strong +56% interview lift
Without
With
+55.9%
Interview Lift
resolved cases with interview
Typical timeline
2y 11m
Avg Prosecution
70 currently pending
Career history
128
Total Applications
across all art units

Statute-Specific Performance

§101
0.5%
-39.5% vs TC avg
§103
37.4%
-2.6% vs TC avg
§102
14.3%
-25.7% vs TC avg
§112
35.5%
-4.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 88 resolved cases

Office Action

§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 . DETAILED ACTION Claims 1-10 are pending in the application. Claims 1-10 are rejected. Claims 2 and 8-10 are objected to. Priority This application is a continuation of International Application No. PCT/CN2023/112569, filed on August 11, 2023. Claim Objections Claims 2 and 8-10 are objected to because of the following informalities: Claim 2 should be amended to recite, “A preparation method for [[of]] the rhodamine-methylene blue derivative fluorescent probe of claim 1, comprising...” for sake of clarity and consistency. Claim 8 should be amended to recite, “...by using the rhodamine-methylene blue derivative fluorescent probe of claim 1” for sake of clarity and consistency. Claim 9 should be amended to recite, “An application method of the rhodamine-methylene blue derivative fluorescent probe of claim 1” for sake of clarity and consistency. Claim 10 should be amended to recite, “An application method of the rhodamine-methylene blue derivative fluorescent probe of claim 1” for sake of clarity and consistency. Appropriate correction is required. Claim Rejections - 35 USC § 112(b) The following is a quotation of 35 U.S.C. § 112(b): (b) CONCLUSION — The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. § 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claims 1-10 are rejected under 35 U.S.C. § 112(b) or 35 U.S.C. § 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. § 112, the applicant), regards as the invention. Claim 1 recites the expression “having the following structural formula” and is rejected as indefinite. The term “having” is open-ended; therefore, it is unclear what additional, unrecited elements- if any- Applicant intended the claim to encompass. It is suggested Applicant replace the aforementioned open-ended expression with a closed-ended transitional phrase which limits the claim to the recited rhodamine-methylene blue derivative structural formula. Dependent claims 2-10 do not correct this issue of indefiniteness and are hence rejected. Claim 2 recites the limitation “adding an organic solution including rhodamine B-(2-aminoethyl) piperazine” and is rejected as indefinite. It is unclear whether Applicant intended the “rhodamine B-(2-aminoethyl) piperazine” to be further limiting of the “organic solution.” Dependent claims 3-7 do not correct this issue of indefiniteness and are hence rejected. Claim 5 recites “a solvent for the organic solution including the RhB-AP” and is rejected as indefinite. It is unclear whether Applicant intended the “RhB-AP” to be further limiting of the “organic solution.” Claim 8 recites the limitation “the ClO- and the ATP in cells” and is rejected as indefinite. There is insufficient antecedent basis for this limitation in the claim as neither claim 8 nor parent claim 1 provides for ClO- and ATP in cells. Allowable Subject Matter Claim 1-10 are free of the prior art and would otherwise be allowable if amended to overcome the claim objections and/or claim rejections under 35 U.S.C. § 112(b) as indicated above. Conclusion No claims are allowed. Any inquiry concerning this communication or earlier communications from the examiner should be directed to DAVID SHIM whose telephone number is (571)270-1205. The examiner can normally be reached Monday - Friday, 9 AM - 5 PM EST. 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, RENEE CLAYTOR can be reached at (571)272-8394. 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. /D.M.S./Examiner, Art Unit 1626 /REBECCA L ANDERSON/Primary Examiner, Art Unit 1626
Read full office action

Prosecution Timeline

Mar 08, 2024
Application Filed
Jul 14, 2026
Non-Final Rejection mailed — §112 (current)

Precedent Cases

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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
58%
Grant Probability
99%
With Interview (+55.9%)
2y 11m (~6m remaining)
Median Time to Grant
Low
PTA Risk
Based on 88 resolved cases by this examiner. Grant probability derived from career allowance rate.

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