Prosecution Insights
Last updated: April 18, 2026
Application No. 18/241,090

ION CHROMATOGRAPHY ANALYSIS SYSTEM

Final Rejection §112
Filed
Aug 31, 2023
Examiner
FRANK, RODNEY T
Art Unit
2855
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Shimadzu Corporation
OA Round
2 (Final)
73%
Grant Probability
Favorable
3-4
OA Rounds
3y 3m
To Grant
76%
With Interview

Examiner Intelligence

Grants 73% — above average
73%
Career Allow Rate
663 granted / 913 resolved
+4.6% vs TC avg
Minimal +4% lift
Without
With
+3.6%
Interview Lift
resolved cases with interview
Typical timeline
3y 3m
Avg Prosecution
23 currently pending
Career history
936
Total Applications
across all art units

Statute-Specific Performance

§101
3.8%
-36.2% vs TC avg
§103
43.9%
+3.9% vs TC avg
§102
21.2%
-18.8% vs TC avg
§112
25.6%
-14.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 913 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 . Claim Rejections - 35 USC § 112 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 1-3 & 5 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. The terms “long-term fluctuation” and “short-term fluctuation” in claim 1 is a relative term which renders the claim indefinite. The terms “long-term fluctuation” and “short-term fluctuation” are not defined by the claim, the specification does not provide a standard for ascertaining the requisite degree, and one of ordinary skill in the art would not be reasonably apprised of the scope of the invention. What is a long-term versus a short-term really isn’t defined. What are the metes and bounds between the two? What is long or short compared to the disclosed normal? The specification doesn’t disclose the differences. There is a disclosed reference range determined, but there is nothing to determine normal to set a reference range versus a range set by either a long- or short-term fluctuation. In fact, the specification often refers to ”a reference range”, so which range is which is a bit confusing. There is a first reference range and a second reference range in at least paragraph [0029], but what is considered as a normal time versus a short time versus a long time isn’t quite defined or made clear. Since claim 1 is indefinite, then claims 2, 3, & 5,which depend from claim 1, are indefinite as well. The term “third reference range” in claim 2 is a relative term which renders the claim indefinite. The term “third reference range” is not defined by the claim, the specification does not provide a standard for ascertaining the requisite degree, and one of ordinary skill in the art would not be reasonably apprised of the scope of the invention. There is no disclosed third reference range in the specification as filed. There is a disclosed second reference range related to the suppressor voltage (see at least filed paragraph [0029]) but there is no disclosed third reference range at all. Response to Arguments Applicant’s arguments with respect to claim(s) 1-3 & 5 have been considered but are moot because the new ground of rejection does not rely on any reasoning applied in the prior rejection of record for any teaching or matter specifically challenged in the argument. Conclusion Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action. Any inquiry concerning this communication or earlier communications from the examiner should be directed to RODNEY T FRANK whose telephone number is (571)272-2193. The examiner can normally be reached M-F 9am-5:30pm. 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, Peter Macchiarolo can be reached at (571) 272-2375. 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. RODNEY T. FRANK Examiner Art Unit 2855 /PETER J MACCHIAROLO/Supervisory Patent Examiner, Art Unit 2855 January 29, 2026
Read full office action

Prosecution Timeline

Aug 31, 2023
Application Filed
Oct 16, 2025
Non-Final Rejection — §112
Dec 18, 2025
Interview Requested
Jan 07, 2026
Applicant Interview (Telephonic)
Jan 07, 2026
Examiner Interview Summary
Jan 08, 2026
Response Filed
Jan 29, 2026
Final Rejection — §112
Mar 23, 2026
Interview Requested
Apr 07, 2026
Request for Continued Examination
Apr 15, 2026
Response after Non-Final Action

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12590944
METHOD AND APPARATUS FOR DETERMINING KETOSIS
2y 5m to grant Granted Mar 31, 2026
Patent 12584936
PIPETTING UNIT WITH CAPACITIVE LIQUID DETECTION, COMBINATION OF SUCH A PIPETTING UNIT AND A PIPETTING TIP, AND METHOD FOR CAPACITIVELY DETECTING PIPETTING LIQUID
2y 5m to grant Granted Mar 24, 2026
Patent 12584839
POINT-OF-USE DEVICES AND METHODS FOR DETERMINING RHEOLOGICAL PROPERTIES OF SAMPLES
2y 5m to grant Granted Mar 24, 2026
Patent 12584776
PROCESS MONITORING DEVICE
2y 5m to grant Granted Mar 24, 2026
Patent 12584891
GAS CHROMATOGRAPH
2y 5m to grant Granted Mar 24, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

AI Strategy Recommendation

Get an AI-powered prosecution strategy using examiner precedents, rejection analysis, and claim mapping.
Powered by AI — typically takes 5-10 seconds

Prosecution Projections

3-4
Expected OA Rounds
73%
Grant Probability
76%
With Interview (+3.6%)
3y 3m
Median Time to Grant
Moderate
PTA Risk
Based on 913 resolved cases by this examiner. Grant probability derived from career allow rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month