Prosecution Insights
Last updated: April 19, 2026
Application No. 18/527,732

ACIDIC RINSE AID COMPOSITIONS AND METHODS OF USE THEREOF

Non-Final OA §102§103
Filed
Dec 04, 2023
Examiner
CARRILLO, BIBI SHARIDAN
Art Unit
1711
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Ecolab Usa Inc.
OA Round
3 (Non-Final)
62%
Grant Probability
Moderate
3-4
OA Rounds
2y 8m
To Grant
45%
With Interview

Examiner Intelligence

Grants 62% of resolved cases
62%
Career Allow Rate
470 granted / 759 resolved
-3.1% vs TC avg
Minimal -17% lift
Without
With
+-17.1%
Interview Lift
resolved cases with interview
Typical timeline
2y 8m
Avg Prosecution
44 currently pending
Career history
803
Total Applications
across all art units

Statute-Specific Performance

§101
0.1%
-39.9% vs TC avg
§103
44.0%
+4.0% vs TC avg
§102
18.4%
-21.6% vs TC avg
§112
33.3%
-6.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 759 resolved cases

Office Action

§102 §103
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 § 102 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. The following is a quotation of the appropriate paragraphs of 35 U.S.C. 102 that form the basis for the rejections under this section made in this Office action: A person shall be entitled to a patent unless – (a)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale, or otherwise available to the public before the effective filing date of the claimed invention. Claim(s) 1-6 and 8-10 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Monsrud et al. (US2012/0291815A1). Re claims 1-2, Monsrud et al. teach a 2-1 or 3-1 acidic composition for use in both the detergent and the rinse aid (paragraph 205) for ware washing, the acidic composition having at least one acid source (paragraph 43), at least one rinse surfactant (paragraph 47) and at least one solidification aid and/or water (paragraphs 254, 255, Table 4), with a pH of less than 6 (paragraph 40), and rinsing the rinse aid composition from the surface with a water source (paragraphs 193-194). Re claim 1, paragraph 77 of the instant specification teaches hydroxycarboxylic acids include citric, lactic, gluconic, acetic acid and alkali metal salts. Applicant is directed to paragraph 39 of Monstrud et al. which teach acid sources include citric, gluconic acids and mixtures thereof. There is a clear teaching of using citric acid for use in the acid compositions. Monsrud clearly teaches that citric acid is particularly well suited for use in the acid compositions (paragraph 39). Re claim 3, refer to paragraph 207. Re claim 4, refer to paragraph 205 for example. Re claim 5, refer to paragraph 143. Re claim 6, refer to 270. Re claim 8, refer to paragraph 319. Re claims 9-10, refer to paragraph 2. Claim Rejections - 35 USC § 103 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. The factual inquiries for establishing a background for determining obviousness under 35 U.S.C. 103 are summarized as follows: 1. Determining the scope and contents of the prior art. 2. Ascertaining the differences between the prior art and the claims at issue. 3. Resolving the level of ordinary skill in the pertinent art. 4. Considering objective evidence present in the application indicating obviousness or nonobviousness. Claim(s) 7 is/are rejected under 35 U.S.C. 103 as being unpatentable over Monsrud et al. (US2012/0291815A1) and further in view of Andersson et al. (EP0467028A1). Monsrud et al. teach the invention substantially as claimed with the exception of softened water source. Andersson et al. teach a process of softening treated water used in a household washing machine used for washing dishes. Page 2 teaches the effectiveness of the surfactants in the dishwashing process is inhibited with the use of hardened water, as the increase in the concentration of calcium ions in the water requires a greater quantity of detergent to obtain the desired washing results. It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to have modified the method of Monsrud et al. to include softened water, as taught by Andersson et al. for purposes of reducing the amount of calcium ions in the water, thereby allowing for an efficient and economical means to decrease detergent concentrations. Response to Arguments 9. The rejection of the claims as being anticipated by Monsrud et al. is maintained for the reasons recited above. Applicant’s arguments are directed to failure of Monsrud et al. to teach the newly amended limitations directed to citric acid and/or lactic acid. Applicant’s arguments are unpersuasive for the following reasons. Applicant is directed to paragraph 77 of the instant specification which teaches hydroxycarboxylic acids including citric, lactic, gluconic, acetic acid and alkali metal salts. Applicant is directed to paragraph 39 of Monsrud et al. which teach additional acids that are particularly well suited include citric, gluconic acids and mixtures thereof. It is also noted that claim 1 of Monsrud et al. recites citric acid. Applicant continues to argue that Monstrud teaches a wide variety of acids, with preferred acids being sulfuric acid derivatives. Applicant argues that there is no teaching out of a broad list of genus of acids taught by Monsrud to choose an acid source comprising citric acid and/or lactic acid. Applicant’s arguments are unpersuasive as Monstrud et al. also teaches additional acids, such as citric acid, which are “well suited” for use in the acid composition and further recites citric acid in claim 1. Additionally, a reference may be relied upon for all that it teaches, including non-preferred embodiments because a non-preferred portion of a reference is just as significant as the preferred portion in assessing the patentability of the claims, Merck & Co. v. Biocraft Laboratories, 10 USPQ2d 1843. “A known or obvious composition does not become patentable simply because it has been described as somewhat inferior to some other product for the same use”, In re Gurley, 31 USPQ2d 1130. Re claim 7, no additional arguments have been presented, and therefore, the rejections of the claims as being anticipated and/or obvious over Monstrud et al. are maintained. 10. Any inquiry concerning this communication or earlier communications from the examiner should be directed to Sharidan Carrillo whose telephone number is (571)272-1297. The examiner can normally be reached M-F, 7:00am-4:00pm. 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, Michael Barr can be reached at 571-272-1414. 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. Sharidan Carrillo Primary Examiner Art Unit 1711 /Sharidan Carrillo/Primary Examiner, Art Unit 1711 bsc
Read full office action

Prosecution Timeline

Dec 04, 2023
Application Filed
Jun 09, 2025
Non-Final Rejection — §102, §103
Aug 26, 2025
Response Filed
Nov 02, 2025
Final Rejection — §102, §103
Jan 05, 2026
Response after Non-Final Action
Jan 29, 2026
Request for Continued Examination
Jan 30, 2026
Response after Non-Final Action
Feb 28, 2026
Non-Final Rejection — §102, §103 (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

3-4
Expected OA Rounds
62%
Grant Probability
45%
With Interview (-17.1%)
2y 8m
Median Time to Grant
High
PTA Risk
Based on 759 resolved cases by this examiner. Grant probability derived from career allow rate.

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