Prosecution Insights
Last updated: October 02, 2026
Application No. 17/995,397

ACOUSTIC PRODUCTS

Non-Final OA §112
Filed
Oct 03, 2022
Priority
Apr 03, 2020 — nonprovisional of PCTEP2020059645
Examiner
KHATRI, PRASHANT J
Art Unit
1783
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Rockwool A/S
OA Round
4 (Non-Final)
61%
Grant Probability
Moderate
4-5
OA Rounds
0m
Est. Remaining
89%
With Interview

Examiner Intelligence

Grants 61% of resolved cases
61%
Career Allowance Rate
541 granted / 881 resolved
-3.6% vs TC avg
Strong +28% interview lift
Without
With
+28.0%
Interview Lift
resolved cases with interview
Typical timeline
3y 5m
Avg Prosecution
33 currently pending
Career history
914
Total Applications
across all art units

Statute-Specific Performance

§101
0.8%
-39.2% vs TC avg
§103
48.7%
+8.7% vs TC avg
§102
18.5%
-21.5% vs TC avg
§112
23.2%
-16.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 881 resolved cases

Office Action

§112
DETAILED ACTION A request for continued examination under 37 CFR 1.114, including the fee set forth in 37 CFR 1.17(e), was filed in this application after allowance or after an Office action under Ex Parte Quayle, 25 USPQ 74, 453 O.G. 213 (Comm'r Pat. 1935). Since this application is eligible for continued examination under 37 CFR 1.114, and the fee set forth in 37 CFR 1.17(e) has been timely paid, prosecution in this application has been reopened pursuant to 37 CFR 1.114. Applicant's submission filed on 8/31/2026 has been entered. Election/Restrictions Claims 19-22 are allowable. Claims 1-3, 5-18, and 23-33, previously withdrawn from consideration as a result of a restriction requirement, require all the limitations of an allowable claim. Pursuant to the procedures set forth in MPEP § 821.04(a), the restriction requirement between inventions I and II, as set forth in the Office action mailed on 11/4/2024, is hereby withdrawn and claims 1-3, 5-18, and 23-33 are hereby rejoined and fully examined for patentability under 37 CFR 1.104. In view of the withdrawal of the restriction requirement, applicant(s) are advised that if any claim presented in a divisional application is anticipated by, or includes all the limitations of, a claim that is allowable in the present application, such claim may be subject to provisional statutory and/or nonstatutory double patenting rejections over the claims of the instant application. Once the restriction requirement is withdrawn, the provisions of 35 U.S.C. 121 are no longer applicable. See In re Ziegler, 443 F.2d 1211, 1215, 170 USPQ 129, 131-32 (CCPA 1971). See also MPEP § 804.01. 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 5-9, 12-14, 26, 29, and 32 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 5 recites the limitation "adhesive" in second line of the claim. There is insufficient antecedent basis for this limitation in the claim. A broad range or limitation together with a narrow range or limitation that falls within the broad range or limitation (in the same claim) may be considered indefinite if the resulting claim does not clearly set forth the metes and bounds of the patent protection desired. See MPEP § 2173.05(c). In the present instance, claim 7 recites the broad recitation 100 to 300°C, and the claim also recites “preferably 170 to 270°C, preferably 180 to 250°C, preferably 190 to 230°C” which are the narrower statements of the range/limitation. The claim(s) are considered indefinite because there is a question or doubt as to whether the feature introduced by such narrower language is (a) merely exemplary of the remainder of the claim, and therefore not required, or (b) a required feature of the claims. Regarding claim 8, the phrase "such as" renders the claim indefinite because it is unclear whether the limitations following the phrase are part of the claimed invention. See MPEP § 2173.05(d). A broad range or limitation together with a narrow range or limitation that falls within the broad range or limitation (in the same claim) may be considered indefinite if the resulting claim does not clearly set forth the metes and bounds of the patent protection desired. See MPEP § 2173.05(c). In the present instance, claim 8 recites the broad recitation 40 to 180 kg/m3, and the claim also recites “80 to 160 kg/m3, preferably 100 to 140 kg/m3” which are the narrower statements of the range/limitation. The claim(s) are considered indefinite because there is a question or doubt as to whether the feature introduced by such narrower language is (a) merely exemplary of the remainder of the claim, and therefore not required, or (b) a required feature of the claims. A broad range or limitation together with a narrow range or limitation that falls within the broad range or limitation (in the same claim) may be considered indefinite if the resulting claim does not clearly set forth the metes and bounds of the patent protection desired. See MPEP § 2173.05(c). In the present instance, claim 9 recites the broad recitation 2 to 8 wt%, and the claim also recites “preferably 3 to 5 wt%” which is the narrower statement of the range/limitation. The claim(s) are considered indefinite because there is a question or doubt as to whether the feature introduced by such narrower language is (a) merely exemplary of the remainder of the claim, and therefore not required, or (b) a required feature of the claims. Regarding claim 12, the phrase "such as" renders the claim indefinite because it is unclear whether the limitations following the phrase are part of the claimed invention. See MPEP § 2173.05(d). A broad range or limitation together with a narrow range or limitation that falls within the broad range or limitation (in the same claim) may be considered indefinite if the resulting claim does not clearly set forth the metes and bounds of the patent protection desired. See MPEP § 2173.05(c). In the present instance, claim 12 recites the broad recitation 12 to 100 mm, and the claim also recites “15 to 50 mm” which is the narrower statement of the range/limitation. The claim(s) are considered indefinite because there is a question or doubt as to whether the feature introduced by such narrower language is (a) merely exemplary of the remainder of the claim, and therefore not required, or (b) a required feature of the claims. A broad range or limitation together with a narrow range or limitation that falls within the broad range or limitation (in the same claim) may be considered indefinite if the resulting claim does not clearly set forth the metes and bounds of the patent protection desired. See MPEP § 2173.05(c). In the present instance, claim 13 recites the broad recitation 550 to 650 mm, and the claim also recites “preferably around 600 mm” which is the narrower statement of the range/limitation. The claim(s) are considered indefinite because there is a question or doubt as to whether the feature introduced by such narrower language is (a) merely exemplary of the remainder of the claim, and therefore not required, or (b) a required feature of the claims. A broad range or limitation together with a narrow range or limitation that falls within the broad range or limitation (in the same claim) may be considered indefinite if the resulting claim does not clearly set forth the metes and bounds of the patent protection desired. See MPEP § 2173.05(c). In the present instance, claim 14 recites the broad recitation 550 to 650 mm or 1100 to 1300 mm, and the claim also recites “preferably around 600 mm or preferably around 1200 mm” which are the narrower statements of the range/limitation. The claim(s) are considered indefinite because there is a question or doubt as to whether the feature introduced by such narrower language is (a) merely exemplary of the remainder of the claim, and therefore not required, or (b) a required feature of the claims. Regarding claim 26, the phrase "such as" renders the claim indefinite because it is unclear whether the limitations following the phrase are part of the claimed invention. See MPEP § 2173.05(d). A broad range or limitation together with a narrow range or limitation that falls within the broad range or limitation (in the same claim) may be considered indefinite if the resulting claim does not clearly set forth the metes and bounds of the patent protection desired. See MPEP § 2173.05(c). In the present instance, claim 26 recites the broad recitation 1 to 40 wt%, and the claim also recites “4 to 20 wt.-%, such as 6 to 12 wt.-%,” which are the narrower statements of the range/limitation. The claim(s) are considered indefinite because there is a question or doubt as to whether the feature introduced by such narrower language is (a) merely exemplary of the remainder of the claim, and therefore not required, or (b) a required feature of the claims. A broad range or limitation together with a narrow range or limitation that falls within the broad range or limitation (in the same claim) may be considered indefinite if the resulting claim does not clearly set forth the metes and bounds of the patent protection desired. See MPEP § 2173.05(c). In the present instance, claim 29 recites the broad recitation 0.5 to 50 wt%, and the claim also recites “preferably 2.5 to 25, more preferably 3 to 15 wt%” which are the narrower statements of the range/limitation. The claim(s) are considered indefinite because there is a question or doubt as to whether the feature introduced by such narrower language is (a) merely exemplary of the remainder of the claim, and therefore not required, or (b) a required feature of the claims. Regarding claim 32, the phrase "such as" renders the claim indefinite because it is unclear whether the limitations following the phrase are part of the claimed invention. See MPEP § 2173.05(d). A broad range or limitation together with a narrow range or limitation that falls within the broad range or limitation (in the same claim) may be considered indefinite if the resulting claim does not clearly set forth the metes and bounds of the patent protection desired. See MPEP § 2173.05(c). In the present instance, claim 32 recites the broad recitation 5 to 40 wt%, and the claim also recites “such as 10 to 30 wt.-%, such as 15 to 25 wt.-%” which is the narrower statement of the range/limitation. The claim(s) are considered indefinite because there is a question or doubt as to whether the feature introduced by such narrower language is (a) merely exemplary of the remainder of the claim, and therefore not required, or (b) a required feature of the claims. Allowable Subject Matter Claims 1-3, 10-11, 15-18, 19-25, 27-28, 30-31, and 33 are allowed. The instant claims are found to be novel and unobvious over the prior art of Laine et al. (WO 2018/122470), Ecophan® Acoustic Design Technical Paper (Hereafter “Ecophan Paper”), and Kiljunen et al. (WO 2011/042610). Laine discloses a biobased hot-melt adhesive composition and applications thereof, wherein the adhesive comprises a plasticizer, oxidized lignin as a tackifier, and a cohesive agent. However, Laine is silent to the oxidized lignin is not crosslinked when cured. The Ecophan paper discloses panels being used as ceiling or wall panels. However, the Ecophan paper is silent to the claimed structure. Kiljunen discloses a bio-adhesive and a wood panel thereof, wherein the bio-adhesive comprises a natural-based binder that is a modified lignin that contains active hydroxyl and amine functional group, a crosslinking agent, and other additives, wherein the lignin is modified with the same materials as that disclosed. The adhesive is disposed between two wood veneers. However, Kiljunen is silent to the adhesive disposed with a fiberglass veil. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to PRASHANT J KHATRI whose telephone number is (571)270-3470. The examiner can normally be reached M-F 10AM-6:30PM. 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, Veronica Ewald can be reached at (571) 272-8519. 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. PRASHANT J. KHATRI Primary Examiner Art Unit 1783 /PRASHANT J KHATRI/Primary Examiner, Art Unit 1783
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Prosecution Timeline

Show 4 earlier events
Oct 23, 2025
Response Filed
Feb 13, 2026
Final Rejection mailed — §112
May 13, 2026
Request for Continued Examination
May 15, 2026
Response after Non-Final Action
May 27, 2026
Examiner Interview (Telephonic)
Aug 31, 2026
Request for Continued Examination
Sep 01, 2026
Response after Non-Final Action
Sep 11, 2026
Non-Final Rejection mailed — §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

4-5
Expected OA Rounds
61%
Grant Probability
89%
With Interview (+28.0%)
3y 5m (~0m remaining)
Median Time to Grant
High
PTA Risk
Based on 881 resolved cases by this examiner. Grant probability derived from career allowance rate.

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