Prosecution Insights
Last updated: April 19, 2026
Application No. 18/536,480

LIFT MECHANISM AND AIR SUPPLY DEVICE WITH LIFT MECHANISM

Non-Final OA §102§112
Filed
Dec 12, 2023
Examiner
ANDERSON II, STEVEN S
Art Unit
3762
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Shenzhen Keeway Technology Co. Ltd.
OA Round
1 (Non-Final)
66%
Grant Probability
Favorable
1-2
OA Rounds
3y 2m
To Grant
99%
With Interview

Examiner Intelligence

Grants 66% — above average
66%
Career Allow Rate
431 granted / 653 resolved
-4.0% vs TC avg
Strong +36% interview lift
Without
With
+35.5%
Interview Lift
resolved cases with interview
Typical timeline
3y 2m
Avg Prosecution
30 currently pending
Career history
683
Total Applications
across all art units

Statute-Specific Performance

§101
0.5%
-39.5% vs TC avg
§103
46.9%
+6.9% vs TC avg
§102
20.4%
-19.6% vs TC avg
§112
29.6%
-10.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 653 resolved cases

Office Action

§102 §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 . DETAILED ACTION 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 1-9 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 1 recites “a threaded rod rotationally arranged in the cylinder”. It is unclear what structure is comprised by an object rotationally arranged. For examination purposes Examiner will consider either the rod can rotate in the cylinder or there is some other rotational relationship between the rod and the cylinder including they do not rotate together. The use of the word rotationally connected in relationship with stationary objects in the following claims makes the term “rotationally” more unclear. Claim 2 recites “the power source is connected to the stationary base, such that the power source drives the stationary base and the threaded rod to rotate”. It is unclear what the stationary base comprises because it is stationary yet rotates. For examination purposes Examiner will consider either to meet the claim limitation. Claim 2 recites “the stationary base is rotationally connected to the installation plate”. It is unclear what structure rotationally connected comprises. For examination purposes Examiner will consider when the base rotates the plate rotates or they rotate freely. Claim 3 recites “stationary base is rotationally connected to the extension stand”. This has the same issue as the 112 directly above this one and will be interpreted in a similar manner. Claim 5 recites “the stationary base is rotationally connected to the collar”. This has the same issue as the 112 directly above this one and will be interpreted in a similar manner. Claim 7 recites “the driving member is configured to drive the cylinder to rotate back and forth above the housing”. It is unclear what rotating back and forth comprises. Back and forth movement is unclear when the initial position and final positions are unclear. This will be interpreted as movement from a beginning point to an end point and back. Claim 8 also recites “rotationally”. This should be corrected in the same manner as claim 1. Claim Rejections - 35 USC § 102 The following is a quotation of the appropriate paragraphs of 35 U.S.C. 102 that form the basis for the rejections under this section made in this Office action: A person shall be entitled to a patent unless – (a)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale, or otherwise available to the public before the effective filing date of the claimed invention. Claim(s) 1-2 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by CN110906474 to Chen (Chen). Regarding claim 1, Chen teaches a cylinder (1, Figures 1-3), a threaded rod rotationally arranged in the cylinder (9, Figures 1-2), a power source for driving the threaded rod to rotate (10, Figures 1-2), and a threaded holder in threaded connection with the threaded rod (14, Figures 1-2), wherein an air supply mechanism is connected to the threaded holder (12, Figures 1-2 comprises a baffle and forms an inlet and outlet, alternatively 11 is an air purifying device which is also connected to the threaded holder), and a guiding element for preventing the threaded holder from rotating is arranged between the cylinder and the threaded holder (13, Figures 1-2). Regarding claim 2, Chen teaches wherein an inner wall of the cylinder is provided with an installation plate (bottom wall of 1, Figures 1-2 which is right on top of 16), an end of the threaded rod is assembled with a stationary base (16, Figures 1-2), the stationary base is rotationally connected to the installation plate (attachment where both rotate together is shown in Figure 1-2), the power source is installed at a side of the installation plate departing from the threaded rod (10, Figures 1-2), and the power source is connected to the stationary base, such that the power source drives the stationary base and the threaded rod to rotate (16, Figures 1-2). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to STEVEN S ANDERSON II whose telephone number is (571)272-2055. The examiner can normally be reached M-F 8-5. 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, Michael Hoang can be reached at 574-272-6460. 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. /STEVEN S ANDERSON II/Primary Examiner, Art Unit 3762
Read full office action

Prosecution Timeline

Dec 12, 2023
Application Filed
Feb 20, 2026
Non-Final Rejection — §102, §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

1-2
Expected OA Rounds
66%
Grant Probability
99%
With Interview (+35.5%)
3y 2m
Median Time to Grant
Low
PTA Risk
Based on 653 resolved cases by this examiner. Grant probability derived from career allow rate.

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