Prosecution Insights
Last updated: April 19, 2026
Application No. 18/030,500

Valve Needle Assembly and Electronic Expansion Valve Having Same

Non-Final OA §102§112
Filed
Apr 05, 2023
Examiner
PULLIAM, CHRISTYANN R
Art Unit
2178
Tech Center
2100 — Computer Architecture & Software
Assignee
Zhejiang Dunan Artificial Environment Co. Ltd.
OA Round
1 (Non-Final)
41%
Grant Probability
Moderate
1-2
OA Rounds
5y 4m
To Grant
65%
With Interview

Examiner Intelligence

Grants 41% of resolved cases
41%
Career Allow Rate
96 granted / 232 resolved
-13.6% vs TC avg
Strong +24% interview lift
Without
With
+23.9%
Interview Lift
resolved cases with interview
Typical timeline
5y 4m
Avg Prosecution
142 currently pending
Career history
374
Total Applications
across all art units

Statute-Specific Performance

§101
8.1%
-31.9% vs TC avg
§103
43.5%
+3.5% vs TC avg
§102
19.9%
-20.1% vs TC avg
§112
23.3%
-16.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 232 resolved cases

Office Action

§102 §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 7 and 16 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. Regarding claim 7, the limitation “the locating structure” has insufficient antecedent basis for this limitation in the claim. Regarding claim 16, the limitation “the locating structure” has insufficient antecedent basis for this limitation in the claim. Claim Rejections - 35 USC § 102 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 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, 6-11, and 15-18 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Lv et al. (Pub. No. US 2011/0012038). Regarding claim 1, Lv et al. disclose a valve needle assembly (Fig. 1), comprising: a valve sleeve (15), the valve sleeve having a cavity (Fig. 1), and the valve sleeve (15) having a first end and a second end arranged opposite each other (Fig. 1); a bushing (12) movably arranged in the cavity (paragraphs 26-27), the bushing being in limiting fit (paragraphs 26-27) with the first end of the valve sleeve (15), and the bushing (12) being configured for driving the valve sleeve (15) to move; a spring (13) arranged in the cavity (Fig. 1), wherein a first end of the spring (13) is connected with the bushing (12), and a second end of the spring (13) is connected with the second end (Fig. 1) of the valve sleeve (15); and a sealing member (16) fixedly arranged (paragraph 26) at the second end of the valve sleeve (15), the sealing member (16) being configured for closing a valve port (18). Regarding claim 2, Lv et al. disclose the valve needle assembly (Fig. 1) further comprising: a fixing member (fixing component between 15 and 16) arranged between the valve sleeve (15) and the sealing member (16), the fixing member (paragraph 26) being configured for fixing the sealing member (16) to the valve sleeve (15). Regarding claim 6, Lv et al. disclose the valve needle assembly (Fig. 1) wherein the valve needle assembly further comprises: a positioning structure (step structure in between 15 and 16, Fig. 1) arranged between the second end of the valve sleeve (15) and the sealing member (16). Regarding claim 7, Lv et al. disclose the valve needle assembly (Fig. 1) wherein an end face (Fig. 1) of an end of the sealing member (16) facing the valve sleeve (15) is provided with a first step structure (Fig. 1), an end face (Fig. 1) of the second end of the valve sleeve (15) is provided with a second step structure (Fig. 1), and the first step structure cooperates with the second step structure to form the locating structure (Fig. 1). Regarding claim 8, Lv et al. disclose the valve needle assembly (Fig. 1) wherein an outer diameter (Fig. 1) of the sealing member (40) is the same as an outer diameter (Fig. 1) of the second end of the valve sleeve (15). Regarding claim 9, Lv et al. disclose the valve needle assembly (Fig. 1) further comprising a sealing cover (fixed upper cover of 15, Fig. 1), wherein the sealing cover (Fig. 1) is fixedly arranged at the first end of the valve sleeve (15), and the sealing cover (Fig. 1) is configured for limiting a displacement (paragraphs 26-27) of the bushing (12) in the valve sleeve (15). Regarding claim 10, Lv et al. disclose an electronic expansion valve (Fig. 1), wherein the electronic expansion valve comprises: a valve body (1 & 2) having a valve port (18); a screw rod (4) arranged in the valve body (1 & 2); the valve needle assembly (Fig. 1), the valve needle assembly is movably arranged in the valve body (1 & 2), the valve needle assembly is arranged corresponding to the valve port (18), the screw rod (4) is in drive connection with the bushing (12) of the valve needle assembly, and the screw rod (4) drives the valve sleeve (15) to move by the bushing (12). Regarding claim 11, Lv et al. disclose the electronic expansion valve (Fig. 1) wherein the valve needle assembly further comprises: a fixing member (fixing component between 15 and 16) arranged between the valve sleeve (15) and the sealing member (16), the fixing member (paragraph 26) being configured for fixing the sealing member (16) to the valve sleeve (15). Regarding claim 15, Lv et al. disclose the electronic expansion valve (Fig. 1) wherein the valve needle assembly further comprises: a positioning structure (step structure in between 15 and 16, Fig. 1) arranged between the second end of the valve sleeve (15) and the sealing member (16). Regarding claim 16, Lv et al. disclose the electronic expansion valve (Fig. 1) wherein an end face (Fig. 1) of an end of the sealing member (16) facing the valve sleeve (15) is provided with a first step structure (Fig. 1), an end face (Fig. 1) of the second end of the valve sleeve (15) is provided with a second step structure (Fig. 1), and the first step structure cooperates with the second step structure to form the locating structure (Fig. 1). Regarding claim 17, Lv et al. disclose the electronic expansion valve (Fig. 1) wherein an outer diameter (Fig. 1) of the sealing member (40) is the same as an outer diameter (Fig. 1) of the second end of the valve sleeve (15). Regarding claim 18, Lv et al. disclose the electronic expansion valve (Fig. 1) further comprising a sealing cover (fixed upper cover of 15, Fig. 1), wherein the sealing cover (Fig. 1) is fixedly arranged at the first end of the valve sleeve (15), and the sealing cover (Fig. 1) is configured for limiting a displacement (paragraphs 26-27) of the bushing (12) in the valve sleeve (15). Allowable Subject Matter Claims 3-5 & 12-14 are 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. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Zhan (Pub. No. US 2015/0184768) disclose a similar valve needle assembly. Zhan et al. (Pub,. No. 2015/0114495) disclose a similar valve needle assembly.\ Any inquiry concerning this communication or earlier communications from the examiner should be directed to Reinaldo Sanchez-Medina, telephone number 571-270-5168, fax number 571-270-6168. The examiner can normally be reached on Monday-Friday (7:30AM-4:00PM 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 supervisors can be reached by phone. Craig Schneider can be reached at 571-272-3607 or Kenneth Rinehart can be reached at 571-272-4881. 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. /REINALDO SANCHEZ-MEDINA/Primary Examiner, Art Unit 3753
Read full office action

Prosecution Timeline

Apr 05, 2023
Application Filed
Sep 27, 2024
Non-Final Rejection — §102, §112
Dec 23, 2024
Response Filed

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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
41%
Grant Probability
65%
With Interview (+23.9%)
5y 4m
Median Time to Grant
Low
PTA Risk
Based on 232 resolved cases by this examiner. Grant probability derived from career allow rate.

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