Prosecution Insights
Last updated: April 19, 2026
Application No. 18/310,820

WATER PURIFYING APPARATUS AND FILTER STRUCTURE

Final Rejection §Other
Filed
May 02, 2023
Examiner
DELEON, DARIO ANTONIO
Art Unit
3763
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Qingdao Ecopure Filter Co. Ltd.
OA Round
2 (Final)
63%
Grant Probability
Moderate
3-4
OA Rounds
2y 11m
To Grant
99%
With Interview

Examiner Intelligence

Grants 63% of resolved cases
63%
Career Allow Rate
114 granted / 181 resolved
-7.0% vs TC avg
Strong +37% interview lift
Without
With
+37.3%
Interview Lift
resolved cases with interview
Typical timeline
2y 11m
Avg Prosecution
51 currently pending
Career history
232
Total Applications
across all art units

Statute-Specific Performance

§103
56.7%
+16.7% vs TC avg
§102
12.5%
-27.5% vs TC avg
§112
30.3%
-9.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 181 resolved cases

Office Action

§Other
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 . Status This Office Action is in response to the remarks and amendments filed on 09/02/2025. The drawing objection is withdrawn. Claims 1-2, 7-9 and 35-37 remain pending for consideration on the merits. Election/Restrictions Newly amended claim 1 directed to an invention that is independent or distinct from the invention originally claimed for the following reasons: As described in the amended specification, paragraph 0219 recites that “In Fig 11F, the first connecting portion 851 has a first side wall 8511 and a second side wall 8512” which does not correspond to the elected Species N, Figures 11G-11J on 04/25/2025 and currently recited in claim 1. Further, as shown on Figure 11G, it does not appear to include a first connection portion 851, only a projection portion 852 extending along a first side wall 8511 and a second side wall 852. Since applicant has received an action on the merits for the originally presented invention, this invention has been constructively elected by original presentation for prosecution on the merits. Accordingly, claims 1-2, 7-9 and 35-37 are withdrawn from consideration as being directed to a non-elected invention. See 37 CFR 1.142(b) and MPEP § 821.03. To preserve a right to petition, the reply to this action must distinctly and specifically point out supposed errors in the restriction requirement. Otherwise, the election shall be treated as a final election without traverse. Traversal must be timely. Failure to timely traverse the requirement will result in the loss of right to petition under 37 CFR 1.144. If claims are subsequently added, applicant must indicate which of the subsequently added claims are readable upon the elected invention. Should applicant traverse on the ground that the inventions are not patentably distinct, applicant should submit evidence or identify such evidence now of record showing the inventions to be obvious variants or clearly admit on the record that this is the case. In either instance, if the examiner finds one of the inventions unpatentable over the prior art, the evidence or admission may be used in a rejection under 35 U.S.C. 103 or pre-AIA 35 U.S.C. 103(a) of the other invention. Specification The amendment filed 09/02/2025 is objected to under 35 U.S.C. 132(a) because it introduces new matter into the disclosure. 35 U.S.C. 132(a) states that no amendment shall introduce new matter into the disclosure of the invention. The added material which is not supported by the original disclosure is as follows: on page 3 of the newly submitted amended specification, it describes Figure 11G to include a first connecting portion to have a first sidewall 8511 and second side wall 8512, which is only illustrated in Figure 11F and not described as corresponding to the elected species N, Figures 11G-11J. Further, on Figure 11G, it is illustrated and described as the “projection portion 852 extending from the first side wall 8511 and second side wall 8512”. Applicant is required to cancel the new matter in the reply to this Office Action. Conclusion THIS ACTION IS MADE FINAL. Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action. Any inquiry concerning this communication or earlier communications from the examiner should be directed to DARIO DELEON whose telephone number is (571)272-8687. The examiner can normally be reached Monday-Friday 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, Jerry Daryl Fletcher can be reached at 571-270-5054. 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. /DARIO ANTONIO DELEON/Examiner, Art Unit 3763 /JERRY-DARYL FLETCHER/Supervisory Patent Examiner, Art Unit 3763
Read full office action

Prosecution Timeline

May 02, 2023
Application Filed
May 28, 2025
Non-Final Rejection — §Other
Sep 02, 2025
Response Filed
Dec 02, 2025
Final Rejection — §Other
Feb 27, 2026
Interview Requested
Mar 10, 2026
Applicant Interview (Telephonic)
Mar 10, 2026
Examiner Interview Summary

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12601532
REFRIGERATING APPLIANCE
2y 5m to grant Granted Apr 14, 2026
Patent 12590741
LUBRICANT RECOVERY SYSTEM FOR HEAT EXCHANGE SYSTEM AND HEAT EXCHANGE SYSTEM
2y 5m to grant Granted Mar 31, 2026
Patent 12589994
ENHANCED HYDROGEN RECOVERY UTILIZING GAS SEPARATION MEMBRANES INTEGRATED WITH PRESSURE SWING ADSORPTION UNIT AND/OR CRYOGENIC SEPARATION SYSTEM
2y 5m to grant Granted Mar 31, 2026
Patent 12584675
COLD PACKS SYSTEM
2y 5m to grant Granted Mar 24, 2026
Patent 12584677
REFRIGERATION SYSTEM STATOR MOUNT
2y 5m to grant Granted Mar 24, 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
63%
Grant Probability
99%
With Interview (+37.3%)
2y 11m
Median Time to Grant
Moderate
PTA Risk
Based on 181 resolved cases by this examiner. Grant probability derived from career allow rate.

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