Prosecution Insights
Last updated: August 14, 2026
Application No. 18/904,689

POLYESTER RESIN CLOSURES FOR CONTAINERS

Non-Final OA §103
Filed
Oct 02, 2024
Priority
Apr 20, 2022 — provisional 63/333,055 +3 more
Examiner
THOMAS, KAREEN KAY
Art Unit
3736
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Origin Materials Operating Inc.
OA Round
3 (Non-Final)
77%
Grant Probability
Favorable
3-4
OA Rounds
4m
Est. Remaining
94%
With Interview

Examiner Intelligence

Grants 77% — above average
77%
Career Allowance Rate
1037 granted / 1347 resolved
+7.0% vs TC avg
Strong +17% interview lift
Without
With
+17.1%
Interview Lift
resolved cases with interview
Typical timeline
2y 2m
Avg Prosecution
24 currently pending
Career history
1365
Total Applications
across all art units

Statute-Specific Performance

§101
0.9%
-39.1% vs TC avg
§103
38.6%
-1.4% vs TC avg
§102
33.1%
-6.9% vs TC avg
§112
23.9%
-16.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1347 resolved cases

Office Action

§103
DETAILED ACTION Continued Examination Under 37 CFR 1.114 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 final rejection. 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and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114. Applicant's submission filed on 7/16/2026 has been entered. Claim Rejections - 35 USC § 103 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. Claim(s) 1, 3-8 and 11-16 is/are rejected under 35 U.S.C. 103 as being unpatentable over Ishii (US8,469,213), in view of Struble (US5,941,422) and in further view of Kreinbrink et al (Kreinbrink) (US20210179323). 1. Ishii teaches a polyester resin closure that mounts onto a finish of a container (Fig. 1); the polyester resin closure comprising: an annular wall (8) configured to seat against a top surface of a rim of the finish; an outer cylindrical wall (10) extending downward from the annular wall, wherein the outer cylindrical wall comprises internal threads (20) configured to engage with the finish; and a tamper evidence band (6) configured to engage with a tamper evidence ledge of the finish, wherein the tamper evidence band is configured to form a tether (58b) for attaching the closure to the container when the closure is removed from the finish. Ishii DIFFERS in that it does not disclose the annular wall comprises one or more welds to the rim of the finish at one or more points. Attention, however is directed to Struble, which discloses welds at points on the finish (column 4, lines 1-18). Therefore, it would have been obvious, to one of ordinary skill within the art, at the time the invention was made, to modify Ishii, in view of Struble, by employing such welds, in order to add to the structural stability of the finish. The references DIFFER in that they do not disclose the closure is made of a polyester resin such as polyethylene terephthalate. Attention, however is directed to Kreinbrink, which teaches that the closure can be made from polyethylene terephthalate (paragraph 0033). Therefore, it would have been obvious, to one of ordinary skill within the art, at the time the invention was made, to modify the references, in view of Kreinbrink, by the closure to be made of polyethylene terephthalate, in order to have an alternative durable material for the closure. 3. The polyester resin closure of claim 1, further comprising a plug seal (14) configured to seal against an inner surface of the finish (Figs. 1-7). 4. The polyester resin closure of claim 3, wherein the outer cylindrical wall comprises an outer skirt having a clearance with a corresponding outer surface of the rim to enable the polyester resin closure to elastically deform in the region of the plug seal (Figs. 1-7). 5. The polyester resin closure of claim 3, wherein the plug seal comprises a chamfer for guiding the plug seal past a lip of the inner surface of the finish when the polyester resin closure is capped onto the container (Figs. 1-7). 6. The polyester resin closure of claim 3, wherein the plug seal comprises an inner cylindrical wall that extends downwardly from the annular wall. 7. The polyester resin closure of claim 6, wherein the inner cylindrical wall comprises a radial surface that is dimensioned for an interference fit with a corresponding inwardly facing surface of the rim of finish for sealing (Figs. 1-7). 8. The polyester resin closure of claim 7, wherein the interference fit is configured to lock the polyester resin closure to the finish (Figs. 1-7). 11. The polyester resin closure of claim 6, wherein a lower wall extends across a bottom of the inner cylindrical wall (Figs. 1-7). 12. The polyester resin closure of claim 11, wherein the lower wall is configured to change shape in response to pressurized contents within the interior of the container (Figs. 1-7). 13. The polyester resin closure of claim 12, wherein the lower wall has a concave upward shape that becomes a convex upward shape when pressure is applied by pressurized contents within the interior of the container (Figs. 1-7). 14. The polyester resin closure of claim 6, wherein the plug seal is configured to establish a sealing interface with the finish (Figs. 1-7). 15. The polyester resin closure of claim 14, wherein a width of the sealing interface is configured to bridge defects present in the finish (Figs. 1-7). 16. The polyester resin closure of claim 14, wherein the lower wall is configured to increase pressure on a sealing interface between the plug seal and the finish (Figs. 1-7). Claim Rejections - 35 USC § 103 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. Claim(s) 2 is/are rejected under 35 U.S.C. 103 as being unpatentable over Ishii, in view of Struble, in view of Kreinbrink and in further view of Jochem (US2005/0061766). 2. The polyester resin closure of claim 1, the references DIFFER in that they do not disclose the internal threads are configured for a snap-on engagement with the finish. Attention, however is directed to Jochem which discloses a snap-on threaded closure (Jochem, paragraph 0004). Therefore, it would have been obvious, to one of ordinary skill within the art, at the time the invention was made, to modify the references, in view of Jochem, by employing a snap-on feature, in order to have an easy way of getting the closure on. Allowable Subject Matter Claims 9 and 10 objected to as being dependent upon a rejected base claim, but would be allowable if rewritten in independent form including all of the limitations of the base claim and any intervening claims. Claim 18 is allowable. Subpart d is not obvious, in light of the other claim limitations. Claim 19 is allowable. Subpart d is not obvious, in light of the other claim limitations. Response to Arguments Applicant’s arguments, see pages 6-8, filed 7/16/2026, with respect to the rejection(s) of claim(s) claims 1, 3-8 and 11-16 under 35 U.S.C 103 have been fully considered and are persuasive. Upon further consideration, a new ground(s) of rejection is made with Ishii (US8,469,213), in view of Struble (US5,941,422) and in further view of Kreinbrink et al (Kreinbrink) (US20210179323). Applicant’s amendment and arguments have been fully considered. In view of the amendment to claim 1, reciting a polyester resin closure and Applicant’s arguments regarding the teachings of the prior art, the rejection has been modified. The present rejection relies on Kreinbrink for the teaching of the polyethylene terephthalate. Claim 2 now relies on Kreinbrink for the teaching of the polyethylene terephthalate. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to KAREEN KAY THOMAS whose telephone number is (571)270-5611. The examiner can normally be reached 9:00am-5:00pm. 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, Orlando E. Aviles can be reached at 571-270-5531. 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. /KAREEN K THOMAS/Primary Examiner, Art Unit 3736
Read full office action

Prosecution Timeline

Oct 02, 2024
Application Filed
Jan 30, 2026
Non-Final Rejection mailed — §103
Apr 27, 2026
Response Filed
May 20, 2026
Final Rejection mailed — §103
Jul 16, 2026
Request for Continued Examination
Jul 22, 2026
Response after Non-Final Action
Jul 29, 2026
Non-Final Rejection mailed — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12698153
RECEPTACLES WITH INTERIOR LINER DISPENSERS
2y 5m to grant Granted Aug 04, 2026
Patent 12686541
CLOSURE DEVICE AND METHOD FOR PRESERVING OXIDIZABLE PRODUCTS
2y 7m to grant Granted Jul 21, 2026
Patent 12686535
CONTAINER, CLOSURE, AND METHODS FOR MANUFACTURE
2y 0m to grant Granted Jul 21, 2026
Patent 12686557
FLUID STORAGE TANK
1y 9m to grant Granted Jul 21, 2026
Patent 12686192
POLYESTER RESIN CLOSURES FOR CONTAINERS
1y 9m to grant Granted Jul 21, 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
77%
Grant Probability
94%
With Interview (+17.1%)
2y 2m (~4m remaining)
Median Time to Grant
High
PTA Risk
Based on 1347 resolved cases by this examiner. Grant probability derived from career allowance rate.

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