Prosecution Insights
Last updated: April 19, 2026
Application No. 17/974,374

ACID BASED CORROSION INHIBITOR COMPOSITIONS AND METHODS

Non-Final OA §112
Filed
Oct 26, 2022
Examiner
DIGGS, TANISHA
Art Unit
1761
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Championx Usa Inc.
OA Round
1 (Non-Final)
54%
Grant Probability
Moderate
1-2
OA Rounds
3y 2m
To Grant
99%
With Interview

Examiner Intelligence

Grants 54% of resolved cases
54%
Career Allow Rate
391 granted / 717 resolved
-10.5% vs TC avg
Strong +54% interview lift
Without
With
+53.7%
Interview Lift
resolved cases with interview
Typical timeline
3y 2m
Avg Prosecution
38 currently pending
Career history
755
Total Applications
across all art units

Statute-Specific Performance

§101
0.1%
-39.9% vs TC avg
§103
49.0%
+9.0% vs TC avg
§102
19.0%
-21.0% vs TC avg
§112
18.8%
-21.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 717 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 . Election/Restrictions Applicant’s election of Group II in the reply filed on December 31, 2025 is acknowledged. Because applicant did not distinctly and specifically point out the supposed errors in the restriction requirement, the election has been treated as an election without traverse (MPEP § 818.01(a)). Claim Objections Claim 11 is objected to because of the following informalities: Claim 11 recites “TGA” and should recite “thioglycolic acid”. Appropriate correction is required. 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 11, 13-19 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 11 recites “an effective amount” and it is unclear what constitutes “an effective amount”; claims 13-19 are subsumed under the rejection. Allowable Subject Matter Claim 12 is objected to as being dependent upon a rejected base claim, but would be allowable if rewritten in independent form including all of the limitations of the base claim and any intervening claims. The following is a statement of reasons for the indication of allowable subject matter: The closest prior art of record, Ritter et al (Mercaptocarboxylic Acids as Reagents for the Identification of Carbonyl Compounds), teaches the reaction of a glyoxal and mercaptoacetic acid; however, fails to teach the claimed composition comprising the reaction product of Formula I or II and fails to teach the method of using the composition comprising the reaction product. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to TANISHA DIGGS whose telephone number is (571)270-7730. The examiner can normally be reached Monday, Tuesday and Friday, 9:00AM-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, Angela Brown-Pettigrew can be reached at (571) 272-2817. 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. /TANISHA DIGGS/Primary Examiner, Art Unit 1761 February 21, 2026
Read full office action

Prosecution Timeline

Oct 26, 2022
Application Filed
Feb 21, 2026
Non-Final Rejection — §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
54%
Grant Probability
99%
With Interview (+53.7%)
3y 2m
Median Time to Grant
Low
PTA Risk
Based on 717 resolved cases by this examiner. Grant probability derived from career allow rate.

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