Prosecution Insights
Last updated: August 18, 2026
Application No. 18/526,105

GRINDING STABILIZING ADDITIVE FOR VERTICAL ROLLER MILLS

Non-Final OA §DP
Filed
Dec 01, 2023
Priority
Jan 05, 2018 — CIP of PCTUS2018012632 +2 more
Examiner
WEISS, PAMELA HL
Art Unit
1732
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Saint-Gobain North America Inc.
OA Round
2 (Non-Final)
54%
Grant Probability
Moderate
2-3
OA Rounds
0m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 54% of resolved cases
54%
Career Allowance Rate
557 granted / 1025 resolved
-10.7% vs TC avg
Strong +47% interview lift
Without
With
+46.8%
Interview Lift
resolved cases with interview
Typical timeline
2y 8m
Avg Prosecution
30 currently pending
Career history
1068
Total Applications
across all art units

Statute-Specific Performance

§101
2.4%
-37.6% vs TC avg
§103
44.7%
+4.7% vs TC avg
§102
12.7%
-27.3% vs TC avg
§112
25.6%
-14.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1025 resolved cases

Office Action

§DP
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 . The remarks filed 4/16/2026 are persuasive esp. as the relate to the limitation for Wk values and the teachings of the prior art requiring water/hydration etc. Accordingly, the rejections are withdrawn. However, no amendments to the claims are submitted, as such, the rejections for obviousness double patenting are maintained as below set forth. Double Patenting The nonstatutory double patenting rejection is based on a judicially created doctrine grounded in public policy (a policy reflected in the statute) so as to prevent the unjustified or improper timewise extension of the “right to exclude” granted by a patent and to prevent possible harassment by multiple assignees. A nonstatutory double patenting rejection is appropriate where the conflicting claims are not identical, but at least one examined application claim is not patentably distinct from the reference claim(s) because the examined application claim is either anticipated by, or would have been obvious over, the reference claim(s). See, e.g., In re Berg, 140 F.3d 1428, 46 USPQ2d 1226 (Fed. Cir. 1998); In re Goodman, 11 F.3d 1046, 29 USPQ2d 2010 (Fed. Cir. 1993); In re Longi, 759 F.2d 887, 225 USPQ 645 (Fed. Cir. 1985); In re Van Ornum, 686 F.2d 937, 214 USPQ 761 (CCPA 1982); In re Vogel, 422 F.2d 438, 164 USPQ 619 (CCPA 1970); In re Thorington, 418 F.2d 528, 163 USPQ 644 (CCPA 1969). A timely filed terminal disclaimer in compliance with 37 CFR 1.321(c) or 1.321(d) may be used to overcome an actual or provisional rejection based on nonstatutory double patenting provided the reference application or patent either is shown to be commonly owned with the examined application, or claims an invention made as a result of activities undertaken within the scope of a joint research agreement. See MPEP § 717.02 for applications subject to examination under the first inventor to file provisions of the AIA as explained in MPEP § 2159. See MPEP § 2146 et seq. for applications not subject to examination under the first inventor to file provisions of the AIA . A terminal disclaimer must be signed in compliance with 37 CFR 1.321(b). The filing of a terminal disclaimer by itself is not a complete reply to a nonstatutory double patenting (NSDP) rejection. A complete reply requires that the terminal disclaimer be accompanied by a reply requesting reconsideration of the prior Office action. Even where the NSDP rejection is provisional the reply must be complete. See MPEP § 804, subsection I.B.1. For a reply to a non-final Office action, see 37 CFR 1.111(a). For a reply to final Office action, see 37 CFR 1.113(c). A request for reconsideration while not provided for in 37 CFR 1.113(c) may be filed after final for consideration. See MPEP §§ 706.07(e) and 714.13. The USPTO Internet website contains terminal disclaimer forms which may be used. Please visit www.uspto.gov/patent/patents-forms. The actual filing date of the application in which the form is filed determines what form (e.g., PTO/SB/25, PTO/SB/26, PTO/AIA /25, or PTO/AIA /26) should be used. A web-based eTerminal Disclaimer may be filled out completely online using web-screens. An eTerminal Disclaimer that meets all requirements is auto-processed and approved immediately upon submission. For more information about eTerminal Disclaimers, refer to www.uspto.gov/patents/apply/applying-online/eterminal-disclaimer. Claims 1-18 rejected on the ground of nonstatutory double patenting as being unpatentable over claim1-30 of U.S. Patent No. 11684929. Although the claims at issue are not identical, they are not patentably distinct from each other because both the instant application and the patent claim a method for grinding in a vertical roller mill (claim 1 of patent vs claims 1, 16 and 18 of instant) with an additive composition including an alkanolamine which includes triethanol amine where the material to be ground includes cement clinker, gypsum and supplemental cement material (claim 2 patent vs. instant claims 1, 4, 8, 16 and 18) and other alkanol amines such as DEIPa EDIOPA THEED and diethylene glycol (see patent alcim 25) and the glycol includes tripopylene glycol and tetrapropylamine glycol (See claim 18 of patent) including additional compositional components such as ethanol diglycine (claim 3 patent vs. claim 5 instant) as well as glycol and glycerin in ranges which overlap the claimed ranges (see claim 4 of patent) and the grinding aid in amount which overlap the claimed ranges as well as a set retarding additive overlapping the claimed ranges (see claim 12 patents) and additives such as gluconate slats molasses, chloride salt, thiocyanate salt (patent claim 15-17 also claimed in the instant application) and additional alkanolamines including those of instant claim 17 (see patent at 22) an additive of ethanol diglycines (patent claim 24-25) rendering obvious the claimed invention as to apparatus grinding the compositional components overlapping ranges etc. The patent having claimed compositional components not requiring the material to be hydrated and having been ground in the claimed apparatus will necessarily possess the claimed properties including but not limited to prehydration and water reduction in ranges which will meet and/or overlap the instantly claimed ranges.. Where the claimed and prior art products are identical or substantially identical in structure or composition, or are produced by identical or substantially identical processes, a prima facie case of either anticipation or obviousness has been established. In re Best, 562 F.2d 1252, 1255, 195 USPQ 430, 433 (CCPA 1977) “When the PTO shows a sound basis for believing that the products of the applicant and the prior art are the same, the applicant has the burden of showing that they are not.” In re Spada, 911 F.2d 705, 709, 15 USPQ2d 1655, 1658 (Fed. Cir.1990) “Products of identical chemical composition cannot have mutually exclusive properties.” A chemical composition and its properties are inseparable. Therefore, if the prior art teaches the identical chemical structure, the properties applicant discloses and/or claims are necessarily present. In re Spada, 911 F.2d 705, 709, 15 USPQ2d 1655, 1658 (Fed. Cir. 1990) See MPEP 2144.05(I): "In the case where the claimed ranges "overlap or lie inside ranges disclosed by the prior art" a prima facie case of obviousness exists. In re Wertheim, 541 F.2d 257, 191 USPQ 90 (CCPA 1976)" Conclusion THIS ACTION IS MADE FINAL. 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 PAMELA HL WEISS whose telephone number is (571)270-7057. The examiner can normally be reached M-Thur 830 am-700 pm. 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, Coris Fung can be reached at (571) 270-5713. 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. /PAMELA H WEISS/Primary Patent Examiner, Art Unit 1732
Read full office action

Prosecution Timeline

Dec 01, 2023
Application Filed
Jan 16, 2026
Non-Final Rejection mailed — §DP
Apr 16, 2026
Response Filed
Jun 02, 2026
Final Rejection mailed — §DP
Jul 31, 2026
Response after Non-Final Action

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

2-3
Expected OA Rounds
54%
Grant Probability
99%
With Interview (+46.8%)
2y 8m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 1025 resolved cases by this examiner. Grant probability derived from career allowance rate.

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