Prosecution Insights
Last updated: April 17, 2026
Application No. 19/169,864

Expandable-Volume Liner for a Collapsible Liquid Holding Tank

Non-Final OA §103§112
Filed
Apr 03, 2025
Examiner
CASTRIOTTA, JENNIFER
Art Unit
3733
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
unknown
OA Round
1 (Non-Final)
62%
Grant Probability
Moderate
1-2
OA Rounds
2y 9m
To Grant
90%
With Interview

Examiner Intelligence

Grants 62% of resolved cases
62%
Career Allow Rate
424 granted / 687 resolved
-8.3% vs TC avg
Strong +29% interview lift
Without
With
+28.8%
Interview Lift
resolved cases with interview
Typical timeline
2y 9m
Avg Prosecution
41 currently pending
Career history
728
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
40.0%
+0.0% vs TC avg
§102
26.6%
-13.4% vs TC avg
§112
28.7%
-11.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 687 resolved cases

Office Action

§103 §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 . Drawings The drawings are objected to as failing to comply with 37 CFR 1.84(p)(4) because reference characters "21" and "23" have both been used to designate side walls. Corrected drawing sheets in compliance with 37 CFR 1.121(d) are required in reply to the Office action to avoid abandonment of the application. Any amended replacement drawing sheet should include all of the figures appearing on the immediate prior version of the sheet, even if only one figure is being amended. Each drawing sheet submitted after the filing date of an application must be labeled in the top margin as either “Replacement Sheet” or “New Sheet” pursuant to 37 CFR 1.121(d). If the changes are not accepted by the examiner, the applicant will be notified and informed of any required corrective action in the next Office action. The objection to the drawings will not be held in abeyance. 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 and 2 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. Claims 1 and 2 are rejected as failing to define the invention in the manner required by 35 U.S.C. 112(b) or pre-AIA 35 U.S.C. 112, second paragraph. The claim(s) are narrative in form and replete with indefinite language. The structure which goes to make up the device must be clearly and positively specified. The structure must be organized and correlated in such a manner as to present a complete operative device. Note the format of the claims in the patent(s) cited. For purposes of further consideration, claims 3 and 4 are being interpreted as stating the following: Claim 1. A liner for a frame of a collapsible portable liquid holding tank, the tank having top and bottom rails spaced apart by vertical struts, the liner comprising: pliant, impervious side walls and a floor panel, said side walls and said floor panel being contoured to store a volume of liquid within an interior space defined by the frame, at least one of said side walls having at least one opening therethrough, each [[said]] opening being disposed between the top and bottom rails and two adjacent struts of the tank; and at least one pliant, impervious collapsible bag, each [[said]] bag having a mouth with a perimeter defined by a respective one of said at least one openings, each [[said]] bag being extendable outwardly from [[a]] the respective [[said]] opening, [[proximate and]] over the bottom rail of the tank, and away from the tank, each [[said]] bag being contoured to store an additional volume of liquid within an interior space defined by said bag, a level of liquid in said liner and in each [[said]] bag being simultaneously and continuously increased and decreased as said volume of liquid stored in said liner is increased and decreased, respectively. Claim 2. [[A]] The liner according to claim 1, further comprising at least one [[other said]] additional pliant, impervious collapsible bag being extendable outwardly from a respective [[said]] opening away from the tank in a different direction than said [[at least one said]] previous pliant, impervious collapsible bag, said [[another]] additional bag being contoured to store another additional volume of liquid within an interior space defined by said [[another]] additional bag, a level of liquid in said liner and in each [[said]] bag [[and said respective bag]] being simultaneously increased and decreased as said volume of liquid stored in said liner is increased and decreased, respectively. Claim Rejections - 35 USC § 103 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 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) 1 and 2 is/are rejected under 35 U.S.C. 103 as being unpatentable over Christensen (US 7905368) in view of Shaw et al. (US 5813680) (hereinafter Shaw). Regarding Claim 1 Christensen teaches a liner for a frame of a collapsible portable liquid holding tank (below – Fig. 1), the tank having top (20/26) and bottom rails (22/28) spaced apart by vertical struts (24/30), the liner comprising: pliant, impervious side walls (10) and a floor panel (8), said side walls and said floor panel being contoured to store a volume of liquid within an interior space defined by the frame, at least one of said side walls having at least one opening (40) therethrough, each opening being disposed between the top and bottom rails and two adjacent struts of the tank (Col. 1, Ln. 49-68). Christensen further teaches at least one drain sleeve (38), each having a mouth with a perimeter defined by a respective one of said at least one openings, each drain sleeve being extendable outwardly from the respective opening, over the bottom rail of the tank, and away from the tank, each drain sleeve being contoured to store an additional volume of liquid within an interior space defined by said drain sleeve when attached to another tank to provide a greater capacity over the single tank (Col. 3, Ln. 37-40). PNG media_image1.png 423 577 media_image1.png Greyscale Christensen does not teach at least one pliant, impervious collapsible bag, each bag having a mouth with a perimeter defined by a respective one of said at least one openings, each bag being extendable outwardly from the respective opening, over the bottom rail of the tank, and away from the tank, each bag being contoured to store an additional volume of liquid within an interior space defined by said bag, a level of liquid in said liner and in each bag being simultaneously and continuously increased and decreased as said volume of liquid stored in said liner is increased and decreased, respectively. Shaw teaches portable liquid holding tank (below – Fig. 4), the tank having at least one pliant, impervious collapsible bag (24), each bag having a mouth with a perimeter defined by a respective opening (26), each bag being extendable outwardly from the respective opening and away from the tank, each bag being contoured to store an additional volume of liquid within an interior space defined by said bag, a level of liquid in said liner and in each bag being simultaneously and continuously increased and decreased as said volume of liquid stored in said liner is increased and decreased, respectively (Cl. 4, Ln. 11-17 and 21-31). PNG media_image2.png 285 469 media_image2.png Greyscale Christensen and Shaw are analogous inventions in the field of fluid containment systems. It would have been obvious to one skilled in the art at the time of filing to modify the liner of Christensen with the teachings of the collapsible bag of Shaw in order to provide a container where the volume may be increased without a secondary container being required (Col. 2, Ln. 57-62). Regarding Claim 2 Christensen in view of Shaw teaches all the limitations of claim 1 as shown above. Christensen further teaches an additional drain sleeve extendable outwardly from a respective opening from the tank in a different direction than said previous drain sleeve. Christensen does not teach at least one additional pliant, impervious collapsible bag being extendable outwardly from a respective opening away from the tank in a different direction than said previous pliant, impervious collapsible bag, said additional bag being contoured to store another additional volume of liquid within an interior space defined by said additional bag, a level of liquid in said liner and in each bag being simultaneously increased and decreased as said volume of liquid stored in said liner is increased and decreased, respectively. Shaw teaches at least one additional pliant, impervious collapsible bag (below – Fig. 5) being extendable outwardly from a respective opening (26, right) away from the tank in a different direction than said previous pliant, impervious collapsible bag (left), said additional bag being contoured to store another additional volume of liquid within an interior space defined by said additional bag, a level of liquid in said liner and in each bag being simultaneously increased and decreased as said volume of liquid stored in said liner is increased and decreased, respectively (Cl. 4, Ln. 11-17 and 21-31). PNG media_image3.png 339 474 media_image3.png Greyscale It would have been obvious to one skilled in the art at the time of filing to further modify the liner of Christensen in view of Shaw with the teachings of the additional collapsible bag of Shaw in order to provide a container where the volume may further be increased without a secondary container being required (Col. 2, Ln. 57-62). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to JENNIFER CASTRIOTTA whose telephone number is (571)270-5279. The examiner can normally be reached Monday - Friday 9am-5pm. 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, Nathan Jenness can be reached at (571) 270-5055. 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. /JENNIFER CASTRIOTTA/Examiner, Art Unit 3733 /NATHAN J JENNESS/Supervisory Patent Examiner, Art Unit 3733 1 April 2026
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Prosecution Timeline

Apr 03, 2025
Application Filed
Apr 01, 2026
Non-Final Rejection — §103, §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
62%
Grant Probability
90%
With Interview (+28.8%)
2y 9m
Median Time to Grant
Low
PTA Risk
Based on 687 resolved cases by this examiner. Grant probability derived from career allow rate.

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