Prosecution Insights
Last updated: July 17, 2026
Application No. 18/747,801

STIRRING ASSEMBLY AND MILK FROTHER

Non-Final OA §112
Filed
Jun 19, 2024
Priority
May 15, 2024 — CN 202410626882.6
Examiner
LAWRENCE JR, FRANK M
Art Unit
Tech Center
Assignee
Shenzhen Chuangpu Network Technology Co. Ltd.
OA Round
1 (Non-Final)
84%
Grant Probability
Favorable
1-2
OA Rounds
3m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 84% — above average
84%
Career Allowance Rate
1192 granted / 1421 resolved
+23.9% vs TC avg
Strong +20% interview lift
Without
With
+19.8%
Interview Lift
resolved cases with interview
Typical timeline
2y 4m
Avg Prosecution
32 currently pending
Career history
1438
Total Applications
across all art units

Statute-Specific Performance

§101
0.5%
-39.5% vs TC avg
§103
59.9%
+19.9% vs TC avg
§102
9.4%
-30.6% vs TC avg
§112
20.5%
-19.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1421 resolved cases

Office Action

§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. Claims 1-20 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. Claims 1-3, 9 and 10 each recite the limitation "the other end of the rotary shaft” or “the other end of the stirring member". There is insufficient antecedent basis for these limitations in the claims. It is suggested that each instance be changed to “another end” or “a second end” or “a second end opposite the one end” to overcome this rejection. Claims 4-8 and 11-20 are rejected for depending from an indefinite parent claim. Allowable Subject Matter Claim 1 would be allowable if rewritten or amended 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. Claims 2-20 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 and to include all of the limitations of the base claim and any intervening claims. The following is a statement of reasons for the indication of allowable subject matter: The closest prior art to Muller et al. (US 4,029,724) discloses an aeration stirrer comprising a stirring member connected to a lower rotary shaft and an upper air introduction passage, but fails to disclose or suggest a motivation for the rotary shaft having a first passage therein and a connection portion connected to an external rotary drive structure, in combination with the other structural imitations in instant claim 1. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. The additional references listed on the attached PTO-892 form disclose rotary stirring and aspiration arrangements. Any inquiry concerning this communication or earlier communications from the examiner should be directed to FRANK LAWRENCE whose telephone number is (571)272-1161. The examiner can normally be reached Mon-Fri 8:30am-7pm. 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, Jennifer Dieterle can be reached at 571-270-7872. 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. /FRANK M LAWRENCE JR/Primary Examiner, Art Unit 1776 fl
Read full office action

Prosecution Timeline

Jun 19, 2024
Application Filed
Jun 04, 2026
Non-Final Rejection mailed — §112 (current)

Precedent Cases

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2y 6m to grant Granted Jul 14, 2026
Patent 12673282
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2y 6m to grant Granted Jul 07, 2026
Patent 12667803
HIGH RECOVERY PROCESS FOR PURIFICATION OF MULTICOMPONENT GASES
3y 0m to grant Granted Jun 30, 2026
Patent 12661614
FILTER ASSEMBLY FOR A THERAPEUTIC GAS DELIVERY DEVICE
2y 4m to grant Granted Jun 23, 2026
Patent 12654128
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2y 11m to grant Granted Jun 16, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

1-2
Expected OA Rounds
84%
Grant Probability
99%
With Interview (+19.8%)
2y 4m (~3m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1421 resolved cases by this examiner. Grant probability derived from career allowance rate.

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