Prosecution Insights
Last updated: August 16, 2026
Application No. 18/493,879

USE OF A MINERAL WOOL PRODUCT

Final Rejection §DP
Filed
Oct 25, 2023
Priority
Aug 30, 2017 — continuation of 10/920,920 +4 more
Examiner
SALVATORE, LYNDA
Art Unit
1789
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Rockwool A/S
OA Round
2 (Final)
64%
Grant Probability
Moderate
3-4
OA Rounds
8m
Est. Remaining
83%
With Interview

Examiner Intelligence

Grants 64% of resolved cases
64%
Career Allowance Rate
639 granted / 999 resolved
-1.0% vs TC avg
Strong +19% interview lift
Without
With
+19.4%
Interview Lift
resolved cases with interview
Typical timeline
3y 6m
Avg Prosecution
50 currently pending
Career history
1062
Total Applications
across all art units

Statute-Specific Performance

§101
0.6%
-39.4% vs TC avg
§103
53.9%
+13.9% vs TC avg
§102
18.0%
-22.0% vs TC avg
§112
14.5%
-25.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 999 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 . Response to Amendment 1. Applicant’s amendments and accompanying remarks filed 3/31/26 have been fully considered and entered. Claims 1, 14, 19 and 20 have been amended. Claims 3-5, 10-13 and 21-40 are canceled. Claims 22-25 have been added. Applicant’s amendments to the drawings are found sufficient to overcome the objections set forth in the Action dated 10/1/25. As such, this objection is hereby withdrawn. Applicant’s amendments to the claims and/or the cancellation of claims 3-5 are found sufficient to overcome the 112 2nd paragraph rejections set forth in the Action dated 10/1/25. As such, these rejections are hereby withdrawn. Applicant’s amendments are also found sufficient to overcome the anticipation and obviousness type rejections set forth in the Action dated 10/1/25. Specifically, the cited prior art references do not teach or suggest the newly added limitations pertaining to the hydrophobic agent as set forth in independent claims 1, 19 and 20. As such, these rejections are hereby withdrawn. The following new ground of objection is set forth below with respect to the numbering of claims 22-25. The double patenting rejections set forth in the Action dated 10/1/25 are maintained. Claim Objections 2. The numbering of claims is not in accordance with 37 CFR 1.126 which requires the original numbering of the claims to be preserved throughout the prosecution. When claims are canceled, the remaining claims must not be renumbered. When new claims are presented, they must be numbered consecutively beginning with the number next following the highest numbered claims previously presented (whether entered or not). Applicants canceled claims 21-40. Thus, claims 22-25 are misnumbered and should be renumbered as 41-44. Appropriate correction is required. Double Patenting 3. 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 1-20 and 22-25 are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-8 of U.S. Patent No. US 10920920 B2. Although the claims at issue are not identical, they are not patentably distinct from each other because the composition of the patented mineral wool product of falls within the claims of this application and the water absorption of the product after storage overlaps the instant claims of this application. Finally, the patented wool product of the patented claims is the same structures as those in the claims of this application. The patented claims suggest the claimed mineral wool product of this application. Claims 1-20 and 22-25 are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-20 of U.S. Patent No. US 11873943 B2. Although the claims at issue are not identical, they are not patentably distinct from each other because the composition of the patented mineral wool product falls within the claims of this application and the water absorption of the claimed product after storage overlaps the instant claims of this application. Finally, the patented wool product of the patented claims is the same structures as those in the claims of this application. The patented claims suggest the claimed mineral wool product of this application. Conclusion 4. Any inquiry concerning this communication or earlier communications from the examiner should be directed to LYNDA SALVATORE whose telephone number is (571)272-1482. The examiner can normally be reached M-F. 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, Marla McConnell can be reached on 571-270-7692. 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. /LYNDA SALVATORE/Primary Examiner, Art Unit 1789
Read full office action

Prosecution Timeline

Oct 25, 2023
Application Filed
Oct 25, 2023
Response after Non-Final Action
Feb 14, 2024
Response after Non-Final Action
Oct 01, 2025
Non-Final Rejection mailed — §DP
Mar 31, 2026
Response Filed
Aug 06, 2026
Final Rejection mailed — §DP (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
64%
Grant Probability
83%
With Interview (+19.4%)
3y 6m (~8m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 999 resolved cases by this examiner. Grant probability derived from career allowance rate.

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