Prosecution Insights
Last updated: April 19, 2026
Application No. 18/341,823

PROPULSION DRIVE ASSEMBLY WITH GAS SUPPLY TO MITIGATE FOULING

Final Rejection §102
Filed
Jun 27, 2023
Examiner
VENNE, DANIEL V
Art Unit
3615
Tech Center
3600 — Transportation & Electronic Commerce
Assignee
Volvo Penta Corporation
OA Round
2 (Final)
71%
Grant Probability
Favorable
3-4
OA Rounds
2y 3m
To Grant
86%
With Interview

Examiner Intelligence

Grants 71% — above average
71%
Career Allow Rate
1162 granted / 1635 resolved
+19.1% vs TC avg
Moderate +15% lift
Without
With
+14.9%
Interview Lift
resolved cases with interview
Typical timeline
2y 3m
Avg Prosecution
51 currently pending
Career history
1686
Total Applications
across all art units

Statute-Specific Performance

§101
0.1%
-39.9% vs TC avg
§103
31.1%
-8.9% vs TC avg
§102
18.3%
-21.7% vs TC avg
§112
43.8%
+3.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1635 resolved cases

Office Action

§102
DETAILED ACTION The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . An amendment was filed by applicant on 01/15/2026. Claims 1, 5 and 7 are amended. Claims 2-4 are canceled. Claims 1 and 5-12 are remaining in the application. The amended Drawings (Replacement Sheets) are accepted, unless otherwise noted. Drawings 7. No marked-up copies of the amended drawing figures were provided to show with markings what has been changed from the previously filed version of the drawings as required. 8. In addition to Replacement Sheets containing the corrected drawing figure(s), applicant is required to submit a marked-up copy of each Replacement Sheet including annotations indicating the changes made to the previous version. The marked-up copy must be clearly labeled as “Annotated Sheets” and must be presented in the amendment or remarks section that explains the change(s) to the drawings. See 37 CFR 1.121(d)(1). Failure to timely submit the proposed drawing and marked-up copy will result in the abandonment of the application. Claim Objections Claim 1 is objected to because of the following informality: On line 23 of claim 1, “the opposite side” should be replaced with -an opposite side-. Appropriate correction is required. Claim Rejections - 35 USC § 102 10. 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. As best understood by the examiner, claims 1 and 5-12 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by D1: JP 2014 221570 A (HIROSHI), cited by applicant. D1 discloses a propulsion drive assembly [3] for a marine vessel [1], said propulsion drive assembly [3] comprising: a propeller drive unit [7, 17-23] for carrying and driving at least one propeller [19], a housing [5, 6] for connection to a hull [4] of the marine vessel [1] on an inside (see Figs. 1-5) of the hull [4] such that the housing [5, 6] surrounds a first opening (see Fig. 4: opening in the hull) of the hull [4] and seals to the hull [4], wherein the housing [5, 6] defines an inner space [5, 6] and wherein the housing [5, 6] is provided with a second opening (see Fig. 4: opening in the housing) through which the at least a portion of the propeller drive unit [7, 17-23] is movable into (see Fig. 4) and out (see Fig. 3) of the inner space [5, 6] through the first opening (see Fig. 4), a suspension mechanism (16) attached to (via the hull (4)) the housing (5 and 6) and configured to suspend the propeller drive unit [7, 17-23], wherein the suspension mechanism [16] is movable along a first longitudinal axis (see Figs. 1-5)) of the housing [5, 6] between a stowed position (Fig. 4), in which the propeller drive unit [7, 17-23] is positioned inside the inner space of the housing [5, 6], and a deployed position (see Fig. 3) in which at least a portion of the propeller drive unit [7, 17-23] protrudes outside the housing [5, 6] through the first opening (see Fig. 3), and a gas supply device [10] configured to supply gas into the inner space [6] of the housing [6], said gas supply device [10] comprising a gas pump or a controllable valve (see Figs. 3-5, including [25]) connectable to a source of pressurized gas [24]. Regarding claims 2-12: the additional features of these claims are also disclosed in D1: For previous claim 2 now canceled and incorporated into amended claim 1: see Figs. 1-5, wherein the suspension mechanism [16] comprises a piston [7] guided within the housing [6] for movement along the first longitudinal axis (see Figs. 1-5), wherein the propeller drive unit [7, 17-23] is attached to the piston [7], wherein the piston [7] seals (airtight room [6]) to the housing [6] thereby separating the inner space [5, 6] into a first space [6] adjacent the second opening (see Figs. 1-5), and a second space [5] on the opposite side of the piston [7], and wherein the gas supply device [10] is configured to provide said gas supply into the first space [6] (see written description § 24). For previous claim 3 now canceled and incorporated into claim 1: see Figs. 3-5 and corresponding written description; reference sign [16] is an actuator. For previous claim 4 now canceled and incorporated into claim 1: see Figs. 3-5: the first end portion of the housing [6] and second end portion of the housing [5], the actuator assembly [16] comprising an actuator (implicit) and a drive mechanism (implicit), being attached to the housing [5] (via the hull [4]) and to the piston at [7b]. For claim 5: the actuator assembly [16] is considered a linear guide being attached to the piston [7] configured to guide the piston [7] relative to the second end portion of the housing [6] for movement along said first longitudinal axis. For claim 6: see §§ 24 and 25 of the written description. For claim 7: see Figs. 1-5 and corresponding written description describing the lower unit is rotatable about a longitudinal axis. For claim 8: see Figs. 5 and corresponding written description describing the base unit [23] being fixed to the piston in the second space [5]. For claim 9: see Figs. 1-5 and corresponding written description describing such arrangement. For claim 10: see Fig. 4 and corresponding written description describing such arrangement. For claim 11: see Figs. 1-5 and corresponding written description describing such arrangement. For claim 12: see Figs. 1 and 2 and corresponding written description. Response to Arguments Applicant's arguments filed pertaining to the claims have been fully considered but they are not persuasive for the following reasons. Applicant states that claim 1 has been amended to recite that the suspension mechanism is attached to the housing and not to the hull; however, such recitation cannot be found in the claim. Applicant has not claimed any direct attachment of one part to another and all parts are interconnected and therefore attached to one another at least indirectly. Applicant has not claimed that the drive mechanism is directly attached to the second end portion or top of the housing and to the piston; such a recitation would differentiate over the prior art. Therefore, the prior art rejection is considered valid and is not withdrawn. Conclusion 12. 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. 13. Any inquiry concerning this communication or earlier communications from the examiner should be directed to DANIEL V VENNE whose telephone number is (571) 272-7947. The examiner can normally be reached between M-F, 7am-3:30pm Flex. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Samuel J. Morano can be reached on (571) 272-6684. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of an application may be obtained from the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see http://pair-direct.uspto.gov. Should you have questions on access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). 14. If you would like assistance from a USPTO Customer Service Representative or access to the automated information system, call 800-786-9199 (USA OR CANADA) or 571-272-1000. /Daniel V Venne/ Senior Examiner, Art Unit 3615 02/02/2026
Read full office action

Prosecution Timeline

Jun 27, 2023
Application Filed
Oct 14, 2025
Non-Final Rejection — §102
Jan 15, 2026
Response Filed
Feb 02, 2026
Final Rejection — §102 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12600446
DEVICES AND SYSTEMS FOR MOUNTING A TRANSDUCER WITHIN A WATERCRAFT HULL
2y 5m to grant Granted Apr 14, 2026
Patent 12595030
HULL-MOUNTED INSTALLATION CONVERSION METHOD
2y 5m to grant Granted Apr 07, 2026
Patent 12595034
Variable Angle Rudder Lift Actuation Device
2y 5m to grant Granted Apr 07, 2026
Patent 12589834
DEVICE FOR CONNECTING TWO PARTS OF A HULL OF A SHIP, AND HULL OF A SHIP COMPRISING SUCH A DEVICE
2y 5m to grant Granted Mar 31, 2026
Patent 12583561
SAILING BOAT WITH AN AUXILIARY HYDRODYNAMIC SURFACE
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

3-4
Expected OA Rounds
71%
Grant Probability
86%
With Interview (+14.9%)
2y 3m
Median Time to Grant
Moderate
PTA Risk
Based on 1635 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