Prosecution Insights
Last updated: April 19, 2026
Application No. 18/211,088

FILTER CARTRIDGE FOR SWIMMING POOLS AND SPAS

Non-Final OA §102§103§112
Filed
Jun 16, 2023
Examiner
POPOVICS, ROBERT J
Art Unit
1776
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Fluidra Group Australia Pty Ltd.
OA Round
1 (Non-Final)
55%
Grant Probability
Moderate
1-2
OA Rounds
3y 4m
To Grant
78%
With Interview

Examiner Intelligence

Grants 55% of resolved cases
55%
Career Allow Rate
411 granted / 747 resolved
-10.0% vs TC avg
Strong +23% interview lift
Without
With
+22.8%
Interview Lift
resolved cases with interview
Typical timeline
3y 4m
Avg Prosecution
16 currently pending
Career history
763
Total Applications
across all art units

Statute-Specific Performance

§101
0.3%
-39.7% vs TC avg
§103
25.3%
-14.7% vs TC avg
§102
25.5%
-14.5% vs TC avg
§112
43.2%
+3.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 747 resolved cases

Office Action

§102 §103 §112
DETAILED ACTION Claim Rejections - 35 USC § 102 Claims 1-4, 6-12 and 14 are rejected under 35 U.S.C. 102(A1/A2) as being anticipated by WO 2016/162097. The present invention is directed to a filter cartridge for a pool or spa comprising a fluid flow path into the filter cartridge wherein the orientation of the fluid flow path is adjustable. A diverter provided at the inlet within a housing of the filter cartridge changes the orientation of the fluid flow path of the pool water entering the housing. Claims 1-4, 6-11 and 14 are seen to be anticipated by, WO 2016/162097, which is considered as the closest prior art to the present invention. With regard to claims 1, 8 and 15, WO 2016/162097 discloses a filter cartridge (1) for a swimming pool or spa (page 3, line 37) comprising a housing (2) with an entry port (3) and an internal diverter (31-figs 1, 7, 8) changing a direction of fluid flow into the filter cartridge from the entry port (page 14, lines 28-35). WO 2016/162097 also discloses a filter cartridge for a swimming pool or spa having a housing and an adjustable diverter within the housing for controlling a fluid flow into the housing; and a method of filtering water from a swimming pool or spa, the method comprising, receiving the water at a filter cartridge and the controlling an orientation of a fluid flow path of the water into a housing of a filter cartridge using an internal diverter. Regarding claims 2-4, 9-12 and 14, WO 2016/162097 discloses the internal diverter is detachable from a housing of the filter cartridge (page 14, lines 30-32; figs 4, 7, 8); the internal diverter is adjustable to provide multiple angular settings directing flow and the adjustable diverter is rotatable relative to the housing (page 14; line 31); and central axis of the entry port intersects a central axis of the housing (see figs 1, 3). The shape of the housing wall is seen to predefine the plurality of angular positions. Regarding claims 6 and 7, WO 2016/162097 discloses the internal diverter is configured to create a predominantly radial flow inside the housing (the tangential flow entering the filter housing disclosed in page 14, line 33 results in creating a radial flow inside the housing); and filtering material placed within the housing, and wherein the housing further comprises an exit port (see item 4, fig 1). Claim Rejections - 35 USC § 103 Claims 5 and 13 are rejected under 35 U.S.C. 103 as being unpatentable over WO 2016/162097 as applied to claims 1-4, 6-12 and 14 above, and further in view of Marciano. Claims 5 and 13 specify vertical internal ribs, which are not expressly disclosed by WO 2016/162097. Marciano discloses vertical ribs 36. It would have been obvious to employ vertical ribs as taught by Marciano in the system of WO 2016/162097, minimally, in order to increase the structural integrity of the structure and/or aid in positioning of the cartridge in the vessel/housing and/or direct flow. Claim Rejections - 35 USC § 112 Claims 1-14 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. It is unclear what is being claimed. Independent claims 1 and 8 call-out a “filter cartridge”, which would be located inside a filter housing as those skilled in the art would understand these terms. Yet, Applicant confusingly calls out a “housing” as being a sub-component of a “filter cartridge”. This claim format only serves to confuse those skilled in the art. In claim 12, it is unclear what is intended by “the plurality of angular positions are predefined by the housing”. How? In what sense are they “pre-defined”? Applicant’s election is acknowledged: PNG media_image1.png 316 886 media_image1.png Greyscale Any inquiry concerning this communication or earlier communications from the examiner should be directed to ROBERT JAMES POPOVICS whose telephone number is (571) 272-1164. The examiner can normally be reached 10:00 AM - 6:00 PM. 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. /ROBERT J POPOVICS/ Primary Examiner Art Unit 1776
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Prosecution Timeline

Jun 16, 2023
Application Filed
Jan 08, 2026
Non-Final Rejection — §102, §103, §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12595197
CONTAINER, CARTRIDGE, KIT AND METHOD FOR SLOW RELEASE OF ALGAECIDE IN SWIMMING POOLS
2y 5m to grant Granted Apr 07, 2026
Patent 12589841
WATER SURFACE FLOATER COLLECTING SHIP
2y 5m to grant Granted Mar 31, 2026
Patent 12583762
SCREENING DEVICE FOR USE IN COARSE MATTER SCREENING WELLS OF A WASTE WATER TREATMENT PLANT
2y 5m to grant Granted Mar 24, 2026
Patent 12569787
MULTI-PLATE OR LAMINATED SCREW PRESS
2y 5m to grant Granted Mar 10, 2026
Patent 12571226
SUCTION POOL CLEANER
2y 5m to grant Granted Mar 10, 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
55%
Grant Probability
78%
With Interview (+22.8%)
3y 4m
Median Time to Grant
Low
PTA Risk
Based on 747 resolved cases by this examiner. Grant probability derived from career allow rate.

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