Prosecution Insights
Last updated: October 02, 2026
Application No. 18/343,269

TREATMENT CHEMICAL CARTRIDGES AND METHODS OF USING THE SAME

Final Rejection §103
Filed
Jun 28, 2023
Priority
Jun 29, 2022 — provisional 63/356,818
Examiner
WASHVILLE, JEFFREY D
Art Unit
1766
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Championx Usa Inc.
OA Round
2 (Final)
80%
Grant Probability
Favorable
3-4
OA Rounds
0m
Est. Remaining
76%
With Interview

Examiner Intelligence

Grants 80% — above average
80%
Career Allowance Rate
1025 granted / 1281 resolved
+15.0% vs TC avg
Minimal -4% lift
Without
With
+-4.5%
Interview Lift
resolved cases with interview
Typical timeline
2y 8m
Avg Prosecution
47 currently pending
Career history
1312
Total Applications
across all art units

Statute-Specific Performance

§101
0.8%
-39.2% vs TC avg
§103
51.2%
+11.2% vs TC avg
§102
32.2%
-7.8% vs TC avg
§112
11.4%
-28.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1281 resolved cases

Office Action

§103
DETAILED ACTION Notice of Pre-AIA or AIA Status 1. The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . Response to Amendment 2. The Applicants submitted a response on 8/27/2026 to the office action mailed on 5/29/2026. The status of the claims are as follows. Claim Rejections - 35 USC § 103 3. Claims 1-12 are rejected under 35 U.S.C. 103 as being unpatentable over (WO 2021/105178 A1) to Johann et al. (hereinafter Johann) in view of the teachings of (US 2006/0124301 A1) to Gupta et al. (hereinafter Gupta) The above noted rejection is hereby maintained. Response to Arguments 4. Applicant's arguments filed 8/27/2026 have been fully considered but they are not persuasive. Applicants argue that Johann does not teach adding a liquid corrosion inhibitor to a sorbent material, which is not relevant to the obviousness rejection using a combination of references. Applicants admits that Johann discloses water treatment by release of protective chemicals from a cartridge. Gupta teaches that the fluids are released to protect equipment from chemical damage. The Applicants make an unpersuasive argument of non-analogous art despite both systems providing release of chemicals to protect equipment from chemical damage. They both solve the same problem of addressing providing chemicals that prevents damage and therefore the rejection is proper. Conclusion 5. THIS ACTION IS MADE FINAL. Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). 6. 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. 7. Any inquiry concerning this communication or earlier communications from the examiner should be directed to JEFFREY D WASHVILLE whose telephone number is (571)270-3262. The examiner can normally be reached M-F 9-5. 8. 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. 9. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Randy Gulakowski can be reached at 571-272-1302. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. 10. 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. /JEFFREY D WASHVILLE/Primary Examiner, Art Unit 1766
Read full office action

Prosecution Timeline

Jun 28, 2023
Application Filed
May 29, 2026
Non-Final Rejection mailed — §103
Aug 27, 2026
Response Filed
Sep 24, 2026
Final Rejection mailed — §103 (current)

Precedent Cases

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Patent 12740847
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Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

3-4
Expected OA Rounds
80%
Grant Probability
76%
With Interview (-4.5%)
2y 8m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 1281 resolved cases by this examiner. Grant probability derived from career allowance rate.

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