Prosecution Insights
Last updated: July 17, 2026
Application No. 18/563,589

SCALE INHIBITOR COMPOSITIONS AND METHODS WITH SUPRAMOLECULAR STRUCTURES

Final Rejection §102§103
Filed
Nov 22, 2023
Priority
May 26, 2021 — provisional 63/193,225 +2 more
Examiner
NGUYEN, HAIDUNG D
Art Unit
1761
Tech Center
1700 — Chemical & Materials Engineering
Assignee
BPS JUST ENERGY TECHNOLOGY, LLC
OA Round
2 (Final)
65%
Grant Probability
Favorable
3-4
OA Rounds
5m
Est. Remaining
93%
With Interview

Examiner Intelligence

Grants 65% — above average
65%
Career Allowance Rate
405 granted / 623 resolved
At TC average
Strong +28% interview lift
Without
With
+27.8%
Interview Lift
resolved cases with interview
Typical timeline
3y 0m
Avg Prosecution
42 currently pending
Career history
667
Total Applications
across all art units

Statute-Specific Performance

§101
0.1%
-39.9% vs TC avg
§103
76.3%
+36.3% vs TC avg
§102
13.0%
-27.0% vs TC avg
§112
5.0%
-35.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 623 resolved cases

Office Action

§102 §103
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 . Response to Amendment This action is responsive to applicant’s amendment filed 3/27/2026. Claims 1, 5-16, 18-25 are pending. Claims 11-16, 18-24 are withdrawn from consideration as being drawn to a non-elected invention. The previous rejection of claims 1, 2, 6-10 under 35 U.S.C. 102(a)(1) as being anticipated by Fan et al. (CN103602990A) is withdrawn in view of applicant’s amendment. The previous rejection of claims 3-5 under 35 U.S.C. 103 as being unpatentable over Fan et al. (CN103602990A) in view of Menke et al (US4,134,959) is withdrawn in view of applicant’s amendment. The previous rejection of claims 1, 2, 5-10 on the ground of nonstatutory double patenting as being unpatentable over claims 1 and 3-8 of copending Application No. 18/264273 is withdrawn in view of applicant’s amendment. Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. The text of those sections of Title 35, U.S. Code not included in this action can be found in a prior Office action. Claim Rejections - 35 USC § 102 Claims 1, 5, 7-10 and 25 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Woo et al. (US 6,106,738) Regarding claims 1, 5, 7-10, Woo discloses a composition comprises 1-1.2% wt. cyclodextrin derivative (HPBCD or RAMEB – claimed supramolecular host/guest chemical) , 0.08-0.4 wt% polyacrylic acid (claimed scale inhibitor), pH buffer HCl, and water (examples LII-LVI). Woo is silent regarding the supramolecular host/guest chemical configured to engaged in host-guest chemistry with the scale inhibitor. However, given that compositions claimed and prior arts contain same supramolecular host/guest chemical and scale inhibitor, the compositions must have the same properties. The law held that if the composition is physically the same, it must have the same properties. See In re Spada, 911 F.2d 705, 709, 15 USPQ2d 1655, 1658 (Fed. Cir. 1990). Regarding claim 25, Woo discloses the composition comprises a mineral (silicate/aluminate zeolites, col 23, ln 65-67). The reference specifically or inherently meets each of the claimed limitations. The reference is anticipatory. Claim Rejections - 35 USC § 103 Claims 6, 7 and 10 are rejected under 35 U.S.C. 103 as being unpatentable over Woo et al. (US 6,106,738). Regarding claims 6, 7 and 10, Woo discloses a scale inhibitor composition as set forth above. Woo discloses the water-soluble polymer polyacrylic acid is used to a level of from about 0.001% to about 3% by weight of the usage composition (col 21, ln 1-35) and cyclodextrin used is about 50% to about 6000%, by weight of the concentrated composition of water. It would have been obvious to one of ordinary skill in the art before the filling date of the invention to discover the optimum or workable ranges of the water-soluble polymer polyacrylic acid, cyclodextrin, and water by routine experimentation to provide additional odor control benefits to the composition. Response to Arguments Applicant’s arguments filed 3/27/2026 have been considered but are moot because the new ground of rejection does not rely on any reference 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 HAIDUNG D NGUYEN whose telephone number is (571)270-5455. The examiner can normally be reached M-Th: 10a-3p. 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. /HAIDUNG D NGUYEN/Primary Examiner, Art Unit 1761 6/10/2026
Read full office action

Prosecution Timeline

Nov 22, 2023
Application Filed
Sep 29, 2025
Non-Final Rejection mailed — §102, §103
Mar 27, 2026
Response Filed
Jun 12, 2026
Final Rejection mailed — §102, §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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FUNCTIONALIZED PHOSPHONATES, AND WATER-SOLUBLE SALTS AND N-OXIDE DERIVATIVES THEREOF, AND METHOD OF USE THEREOF AS SCALE INHIBITOR
2y 4m to grant Granted Jun 30, 2026
Patent 12671082
Electroactive Materials for Metal-Ion Batteries
1y 6m to grant Granted Jun 30, 2026
Patent 12658344
COPPER-ANF COMPOSITE CONDUCTOR FABRICATION
3y 5m to grant Granted Jun 16, 2026
Patent 12653205
OXYGEN ABSORBER TABLET
2y 6m to grant Granted Jun 16, 2026
Patent 12640364
High Capacity, Long Cycle Life Battery Anode Materials, Compositions and Methods
3y 8m to grant Granted May 26, 2026
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
65%
Grant Probability
93%
With Interview (+27.8%)
3y 0m (~5m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 623 resolved cases by this examiner. Grant probability derived from career allowance rate.

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