Prosecution Insights
Last updated: April 19, 2026
Application No. 18/438,918

DEVICE FOR DRAINING A WASTE WATER TANK COMPRISING A HATCH INCORPORATING A LIQUID STORE, AIRCRAFT HAVING AT LEAST ONE SUCH DRAINAGE DEVICE

Non-Final OA §102§112
Filed
Feb 12, 2024
Examiner
CRANE, LAUREN ASHLEY
Art Unit
3754
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Airbus Canada Limited Partnership
OA Round
1 (Non-Final)
57%
Grant Probability
Moderate
1-2
OA Rounds
3y 0m
To Grant
89%
With Interview

Examiner Intelligence

Grants 57% of resolved cases
57%
Career Allow Rate
478 granted / 836 resolved
-12.8% vs TC avg
Strong +32% interview lift
Without
With
+31.7%
Interview Lift
resolved cases with interview
Typical timeline
3y 0m
Avg Prosecution
17 currently pending
Career history
853
Total Applications
across all art units

Statute-Specific Performance

§101
0.1%
-39.9% vs TC avg
§103
49.0%
+9.0% vs TC avg
§102
24.9%
-15.1% vs TC avg
§112
19.2%
-20.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 836 resolved cases

Office Action

§102 §112
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 1-10 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. Claim 1 recites the limitation "the tank" in lines 4 and 5. There is insufficient antecedent basis for this limitation in the claim. The limitation should read “the at least one tank”. 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) 1-10 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Saville et al (US Patent 5535784 herein after Saville). Regarding Claim 1, Saville shows an aircraft comprising: a fuselage (12), at least one tank for storing waste water (column 7 lines 10-11), and a drainage device (16, 28) for the tank comprising a drainage duct that has an upstream end configured to open into the tank and a downstream end to which a discharge duct (30) is configured to be connected (column 7 lines 7-12), a drainage valve (18) positioned between the upstream and downstream ends of the drainage duct (column 7 lines 10-18), a housing (10) dimensioned to house at least the downstream end of the drainage duct (Fig.6), and a hatch (18) configured to move between an open position (Fig.7) in which the hatch opens the housing and a closed position (Fig.6) in which the hatch closes the housing, the hatch comprising an inner face (68) oriented toward the drainage duct when the hatch is in the closed position (Fig.6) and an outer face (38) opposite the inner face and positioned to extend the fuselage when the hatch is in the closed position (Fig.6), wherein the hatch comprises a liquid store (34) positioned on the inner face thereof (Fig.7), into which the drainage duct opens when the hatch is in the closed position, the liquid store configured to collect and store any liquid coming out of the drainage duct (column 7 lines 37-45). Regarding claim 2, Saville shows the aircraft as claimed in claim 1, wherein the liquid store comprises at least one lateral wall (see annotated figure below) that extends along a closed perimeter (see annotated figure below) between a lower edge (see annotate figure below) joined to the inner face of the hatch and an upper edge (39 or see annotated figure below) remote from the inner face of the hatch. PNG media_image1.png 673 858 media_image1.png Greyscale Regarding Claim 3, Saville shows the aircraft as claimed in claim 2, wherein the lateral wall has a height (see annotated figure below), corresponding to a distance between the lower and upper edges (39 or see annotated figure below) thereof, such that the downstream end of the drainage duct is positioned between the inner face of the hatch and a surface containing the upper edge of the lateral wall (Fig.6). PNG media_image2.png 673 858 media_image2.png Greyscale Regarding Claim 4, Saville shows the aircraft as claimed in claim 2, wherein the upper edge (39) of the lateral wall is positioned in a substantially horizontal plane when the hatch is in the closed position (Fig. 6a). Regarding Claim 5, Saville shows the aircraft as claimed in claim 2, wherein the closed perimeter followed by the lateral wall is remote and separate from the drainage duct (they are two separate pieces; Fig.7). Regarding Claim 6, Saville shows the aircraft as claimed in claim 2, wherein the closed perimeter followed by the lateral wall has a section very slightly larger than the section of the drainage duct (the lateral wall surrounds the drainage duct; Fig.6a). Regarding Claim 7, Saville shows the aircraft as claimed in claim 2, wherein the liquid store comprises a bottom (see annotated figure below) joined to the lateral wall about the entire closed perimeter. PNG media_image3.png 673 858 media_image3.png Greyscale Regarding Claim 8, Saville shows the aircraft as claimed in claim 7, wherein the bottom is positioned in a first plane substantially parallel to a second plane containing the downstream end of the drainage duct when the hatch is in the closed position (Fig.6). Regarding Claim 9, Saville shows the aircraft as claimed in claim 8, wherein the bottom is positioned so as to be pressed against the downstream end of the drainage duct when the hatch is in the closed position (Fig.6) Regarding Claim 10, Saville shows the aircraft as claimed in claim 1, wherein the drainage device further comprises a ring joint (58) interposed between the drainage duct and the liquid store when the hatch is in the closed position (Fig.6A). Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Grills et al (Re 32,750) is directed to the state of the art as a teaching of a waste tank located in an aircraft having a discharge outlet. Any inquiry concerning this communication or earlier communications from the examiner should be directed to LAUREN ASHLEY CRANE whose telephone number is (571)270-5198. The examiner can normally be reached Mondays & Tuesdays 8 am - 4pm. 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, David Angwin can be reached at 571-270-3735. 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. /LAUREN A CRANE/Primary Examiner, Art Unit 3754
Read full office action

Prosecution Timeline

Feb 12, 2024
Application Filed
Mar 04, 2026
Non-Final Rejection — §102, §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12599269
TILEABLE RECEPTOR
2y 5m to grant Granted Apr 14, 2026
Patent 12595649
FLUIDICS DEVICES FOR PLUMBING FIXTURES
2y 5m to grant Granted Apr 07, 2026
Patent 12596390
TEMPERATURE ADJUSTMENT METHOD FOR AN INTELLIGENT TOILET, AN ELECTRONIC DEVICE, A STORAGE MEDIUM, AND AN INTELLIGENT TOILET
2y 5m to grant Granted Apr 07, 2026
Patent 12590448
CONTROL SYSTEM AND A CONTROL METHOD OF INTELLIGENT TOILETS
2y 5m to grant Granted Mar 31, 2026
Patent 12584301
LAVATORY CARRIER ASSEMBLY WITH WASTE LINE ACCESS PORT
2y 5m to grant Granted Mar 24, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

AI Strategy Recommendation

Get an AI-powered prosecution strategy using examiner precedents, rejection analysis, and claim mapping.
Powered by AI — typically takes 5-10 seconds

Prosecution Projections

1-2
Expected OA Rounds
57%
Grant Probability
89%
With Interview (+31.7%)
3y 0m
Median Time to Grant
Low
PTA Risk
Based on 836 resolved cases by this examiner. Grant probability derived from career allow 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