Prosecution Insights
Last updated: April 19, 2026
Application No. 17/447,702

POLYURETHANE FOAM AND METHODS OF FORMING THE SAME

Final Rejection §103§112
Filed
Sep 15, 2021
Examiner
RIOJA, MELISSA A
Art Unit
1764
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Saint-Gobain
OA Round
8 (Final)
50%
Grant Probability
Moderate
9-10
OA Rounds
3y 4m
To Grant
99%
With Interview

Examiner Intelligence

Grants 50% of resolved cases
50%
Career Allow Rate
421 granted / 847 resolved
-15.3% vs TC avg
Strong +55% interview lift
Without
With
+54.8%
Interview Lift
resolved cases with interview
Typical timeline
3y 4m
Avg Prosecution
74 currently pending
Career history
921
Total Applications
across all art units

Statute-Specific Performance

§101
0.6%
-39.4% vs TC avg
§103
42.2%
+2.2% vs TC avg
§102
14.2%
-25.8% vs TC avg
§112
31.2%
-8.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 847 resolved cases

Office Action

§103 §112
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 § 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. Claim 5 is 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. It is noted that Claim 5 sets forth a density of not greater than about 190 kg/m3. As written, it is unclear if the claimed range incorporates the lower limit for density set forth in independent Claim 1. For the purposes of examination, Claim 5 will be interpreted as setting forth the polyurethane foam has a density of at least 120 kg/m3 and not greater than about 190 kg/m3. Allowable Subject Matter Claims 1 – 4, 6, 7, 9 – 13, 15, 16, and 18 – 20 are allowed. Claim 5 would be allowable if rewritten to overcome the rejection(s) under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), 2nd paragraph, set forth in this Office action. The following is an examiner’s statement of reasons for allowance: the amendments to the claims filed February 10, 2026 have overcome all outstanding rejections of Claims 1 – 4, 6, 7, 9 – 13, 15, 16, and 18 – 20, namely the rejections under 35 U.S.C. 112 (d) and 35 U.S.C. 103. With specific respect to the prior art, the subject matter of Claim 9 has been incorporated into each independent claim. This subject matter was already indicated to be allowable over the prior art for the reasons detailed in the Office action of November 10, 2025. Any comments considered necessary by applicant must be submitted no later than the payment of the issue fee and, to avoid processing delays, should preferably accompany the issue fee. Such submissions should be clearly labeled “Comments on Statement of Reasons for Allowance.” Response to Arguments Applicant's arguments filed February 10, 2026 have been fully considered. The Office responds as follows: Rejections Under 35 U.S.C. 112(b) With respect to the rejection of Claim 5 under 35 U.S.C. 112(b), applicant argues that a person of ordinary skill in the art would readily understand that Claim 5 narrows the upper bound of the density, while maintaining the lower bound of at least 120 kg/m3. However, the Office has maintained this rejection. Claim 5 sets forth the polyurethane foam has a density of not greater than about 190 kg/m3. This creates the issue of indefiniteness as written, as no lower limit for the density is set forth. It is then unclear if the claim necessarily incorporates the lower limit of at least 120 kg/m3 set forth in the instant claim or if the claim is instead setting a polyurethane foam have any density in the recited range of not greater than 190 kg/m3. Rejections Under 35 U.S.C. 112(d) The Office agrees that the amendment to Claim 6 overcomes the outstanding rejection under 35 U.S.C. 112(d). Accordingly, this rejection has been withdrawn. Rejections Under 35 U.S.C. 103 The Office agrees that the amendments to the claims overcome all outstanding rejections under 35 U.S.C. 103. Accordingly, all outstanding rejections under 35 U.S.C. 103 have been withdrawn. 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. Correspondence Any inquiry concerning this communication or earlier communications from the examiner should be directed to MELISSA RIOJA whose telephone number is (571)270-3305. The examiner can normally be reached Monday - Friday 10:00 am - 6:30 pm EST. 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, Arrie Lanee Reuther can be reached at (571)270-7026. 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. /MELISSA A RIOJA/Primary Examiner, Art Unit 1764
Read full office action

Prosecution Timeline

Sep 15, 2021
Application Filed
Mar 15, 2023
Non-Final Rejection — §103, §112
Jun 20, 2023
Response Filed
Sep 17, 2023
Final Rejection — §103, §112
Dec 21, 2023
Request for Continued Examination
Dec 28, 2023
Response after Non-Final Action
Apr 17, 2024
Non-Final Rejection — §103, §112
Jul 22, 2024
Response Filed
Aug 16, 2024
Final Rejection — §103, §112
Oct 18, 2024
Response after Non-Final Action
Nov 21, 2024
Request for Continued Examination
Nov 22, 2024
Response after Non-Final Action
Dec 17, 2024
Non-Final Rejection — §103, §112
Mar 24, 2025
Response Filed
May 22, 2025
Final Rejection — §103, §112
Aug 27, 2025
Request for Continued Examination
Aug 31, 2025
Response after Non-Final Action
Nov 06, 2025
Non-Final Rejection — §103, §112
Feb 10, 2026
Response Filed
Mar 17, 2026
Final Rejection — §103, §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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POLYETHER BLOCK AMIDE-POLY(METH)ACRYLATE FOAMS
2y 5m to grant Granted Apr 14, 2026
Patent 12599703
HYBRID HETEROGENEOUS HYDROGEL, MANUFACTURING METHOD AND USE AS AN IN-SITU NON-DEGRADABLE FILLER IMPLANT
2y 5m to grant Granted Apr 14, 2026
Patent 12584014
POROUS POLYURETHANE PARTICLE COMPOSITION AND METHODS THEREOF
2y 5m to grant Granted Mar 24, 2026
Patent 12584371
SYNTACTIC FOAM PRESSURE HOUSING
2y 5m to grant Granted Mar 24, 2026
Patent 12570786
RIGID POLYURETHANE FOAM MADE WITH A HYDROCARBON BLOWING AGENT AND 1,1,1,4,4,4-HEXAFLUOROBUT-2-ENE
2y 5m to grant Granted Mar 10, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

9-10
Expected OA Rounds
50%
Grant Probability
99%
With Interview (+54.8%)
3y 4m
Median Time to Grant
High
PTA Risk
Based on 847 resolved cases by this examiner. Grant probability derived from career allow rate.

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