Prosecution Insights
Last updated: July 17, 2026
Application No. 18/560,046

MULTI-ELEMENT FILTRATION VESSEL

Non-Final OA §102§Other
Filed
Nov 09, 2023
Priority
May 12, 2021 — CN PCT/CN2021/093191 +1 more
Examiner
MENON, KRISHNAN S
Art Unit
1777
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Zhejiang Omex Environmental Engineering Co. Ltd.
OA Round
1 (Non-Final)
60%
Grant Probability
Moderate
1-2
OA Rounds
6m
Est. Remaining
72%
With Interview

Examiner Intelligence

Grants 60% of resolved cases
60%
Career Allowance Rate
898 granted / 1500 resolved
-5.1% vs TC avg
Moderate +12% lift
Without
With
+11.8%
Interview Lift
resolved cases with interview
Typical timeline
3y 3m
Avg Prosecution
67 currently pending
Career history
1563
Total Applications
across all art units

Statute-Specific Performance

§101
0.5%
-39.5% vs TC avg
§103
83.6%
+43.6% vs TC avg
§102
7.6%
-32.4% vs TC avg
§112
4.4%
-35.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1500 resolved cases

Office Action

§102 §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 . Election/Restrictions Applicant’s election without traverse of claims 10-12 in the reply filed on 5/11/26 is acknowledged. The examiner acknowledges with appreciation the error in the restriction of misidentifying claims 13-15 in group II. Accordingly claims 1-9 and 13-15 are withdrawn from consideration, but will be considered for rejoinder upon finding of allowable subject matter. Claim Rejections - 35 USC § 102 and 103 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. The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. Claim(s) 10-12 are rejected under 35 U.S.C. 102a(1) as being anticipated by Taniguchi et al (US 7,160,455). PNG media_image1.png 745 482 media_image1.png Greyscale Taniguchi’s fig. 32 is copied herein with the claimed elements annotated. It shows a hollow fiber membrane element (1, fig. 1) having plurality of hollow fibers (2) inside an elongated body (19), the hollow fibers are affixed at the upper end to the body and has separate concentrate and permeate outlets as marked. The bottom end of the body is stepped down to a narrower portion and having a shoulder (upper and lower sections) which is capable of resting on a pair of beams. The corresponding upper and lower cavities are marked. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Two other references are also cited in an 892 attached herewith. Of these Watanabe (US 7,083,726) shows a very similar design as in Taniguchi, See fig. 6. Any inquiry concerning this communication or earlier communications from the examiner should be directed to KRISHNAN S MENON whose telephone number is (571)272-1143. The examiner can normally be reached Flexible, but generally Monday-Friday: 8:00AM-4:30PM. 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, Prem C Singh can be reached at 571-272-6381. 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. /KRISHNAN S MENON/Primary Examiner, Art Unit 1777
Read full office action

Prosecution Timeline

Nov 09, 2023
Application Filed
Jun 03, 2026
Non-Final Rejection mailed — §102, §Other (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12673301
MULTILAYER POROUS MEMBRANE WITH INCOMPATIBLE RESINS
3y 8m to grant Granted Jul 07, 2026
Patent 12673300
COMPOSITE SEMIPERMEABLE MEMBRANE, AND SPIRAL MEMBRANE ELEMENT
2y 4m to grant Granted Jul 07, 2026
Patent 12673887
METHOD AND SYSTEM FOR PRE-TREATING HIGH STRENGTH WASTEWATER
2y 9m to grant Granted Jul 07, 2026
Patent 12663403
FILTER ASSEMBLIES, DEPTH INDICATORS, TORQUE-LIMITING FITTINGS, TORQUE-INDICATING FITTINGS, AND SYSTEMS INCORPORATING THE SAME
4y 3m to grant Granted Jun 23, 2026
Patent 12654139
METHOD FOR IMPROVING THE AIRTIGHTNESS OF BUILDINGS USING A BIOPOLYMER-BASED MEMBRANE
2y 11m to grant Granted Jun 16, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

Strategy Recommendation AI-generated — please review before filing

Get a prosecution strategy drawn from examiner precedents, rejection analysis, and claim mapping.
Typically takes 5-10 seconds — AI-generated, attorney review required before filing

Prosecution Projections

1-2
Expected OA Rounds
60%
Grant Probability
72%
With Interview (+11.8%)
3y 3m (~6m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1500 resolved cases by this examiner. Grant probability derived from career allowance rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month