Prosecution Insights
Last updated: October 25, 2026
Application No. 18/607,344

LOCKING DEVICE FOR RUBBER COMPOSITE EXTRUDER HEAD, EXTRUDER HEAD AND METHOD

Non-Final OA §112
Filed
Mar 15, 2024
Priority
Sep 18, 2021 — CN 202111096930.8 +2 more
Examiner
LIANG, SHIBIN
Art Unit
1741
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Guilin Rubber Industry R&D Institute Co. Ltd.
OA Round
2 (Non-Final)
63%
Grant Probability
Moderate
2-3
OA Rounds
5m
Est. Remaining
80%
With Interview

Examiner Intelligence

Grants 63% of resolved cases
63%
Career Allowance Rate
283 granted / 449 resolved
-2.0% vs TC avg
Strong +17% interview lift
Without
With
+17.1%
Interview Lift
resolved cases with interview
Typical timeline
3y 0m
Avg Prosecution
47 currently pending
Career history
509
Total Applications
across all art units

Statute-Specific Performance

§101
1.5%
-38.5% vs TC avg
§103
65.9%
+25.9% vs TC avg
§102
17.4%
-22.6% vs TC avg
§112
13.5%
-26.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 449 resolved cases

Office Action

§112
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 . 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and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114.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 8/21/2026 has been entered. Response to Amendment The Amendment filed Aug. 21, 2026 has been entered. Claims 7-12, 21-28 remain pending in the application. Claims 1-6 have been cancelled. Election/Restriction Claims 7-12 directed to an allowable device. Pursuant to the procedures set forth in MPEP § 821.04, claims 21-28, directed to the process of using the allowable device, previously withdrawn from consideration as a result of a restriction requirement, are hereby rejoined and fully examined for patentability under 37 CFR 1.104. Because all claims previously withdrawn from consideration under 37 CFR 1.142 have been rejoined, the restriction requirement as set forth in the Office action mailed on 8/26/2025 is hereby withdrawn. In view of the withdrawal of the restriction requirement as to the rejoined inventions, applicant(s) are advised that if any claim presented in a continuation or 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 21-28 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 pre-AIA the applicant regards as the invention. Claim 21 recites the limitations “a lock door” in line 4 and “the lock door” in line 6. Then, the limitations “lock doors” in line 16 and “the lock doors” in lines 19-20 are recited. It is unclear the relationship between “the lock door” and “the lock doors”. Claim 21 is indefinite. Claim 23 recites the limitations "the outermost movable die body" in line 10. There is insufficient antecedent basis for these limitations in the claim. It is unclear which or where the item is pointed out. Claim 23 is indefinite. Claim 27 recites the limitations "the lengths of all flow channels" in line 3. There is insufficient antecedent basis for these limitations in the claim. It is unclear which or where the item is pointed out. Claim 27 is indefinite. Claims 22-28 depending on claim 21 are rejected as well. Claims 24-25 depending on claim 23 are rejected as well. Response to Arguments Applicant's arguments filed 8/21/2026 have been fully considered. Claims 21-28 have been rejointed for consideration. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to SHIBIN LIANG whose telephone number is (571)272-8811. The examiner can normally be reached on M-F 8:30 - 4:30. 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, Alison L Hindenlang can be reached on 571 270 7001. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of an application may be obtained from the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see http://pair-direct.uspto.gov. Should you have questions on access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative or access to the automated information system, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /SHIBIN LIANG/Examiner, Art Unit 1741 /ALISON L HINDENLANG/Supervisory Patent Examiner, Art Unit 1741
Read full office action

Prosecution Timeline

Mar 15, 2024
Application Filed
Dec 19, 2025
Non-Final Rejection mailed — §112
Mar 18, 2026
Response Filed
Aug 21, 2026
Request for Continued Examination
Aug 26, 2026
Response after Non-Final Action
Oct 07, 2026
Examiner Interview (Telephonic)
Oct 14, 2026
Non-Final Rejection mailed — §112 (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

2-3
Expected OA Rounds
63%
Grant Probability
80%
With Interview (+17.1%)
3y 0m (~5m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 449 resolved cases by this examiner. Grant probability derived from career allowance rate.

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