Prosecution Insights
Last updated: April 17, 2026
Application No. 19/177,404

Carbon Dioxide Underwater Delivery Device and Supplementation System

Non-Final OA §DP
Filed
Apr 11, 2025
Examiner
NGUYEN, TRINH T
Art Unit
3644
Tech Center
3600 — Transportation & Electronic Commerce
Assignee
unknown
OA Round
1 (Non-Final)
69%
Grant Probability
Favorable
1-2
OA Rounds
2y 7m
To Grant
96%
With Interview

Examiner Intelligence

Grants 69% — above average
69%
Career Allow Rate
705 granted / 1024 resolved
+16.8% vs TC avg
Strong +28% interview lift
Without
With
+27.5%
Interview Lift
resolved cases with interview
Typical timeline
2y 7m
Avg Prosecution
22 currently pending
Career history
1046
Total Applications
across all art units

Statute-Specific Performance

§101
0.4%
-39.6% vs TC avg
§103
47.1%
+7.1% vs TC avg
§102
26.4%
-13.6% vs TC avg
§112
15.7%
-24.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1024 resolved cases

Office Action

§DP
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 . Double Patenting The nonstatutory double patenting rejection is based on a judicially created doctrine grounded in public policy (a policy reflected in the statute) so as to prevent the unjustified or improper timewise extension of the “right to exclude” granted by a patent and to prevent possible harassment by multiple assignees. A nonstatutory obviousness-type double patenting rejection is appropriate where the conflicting claims are not identical, but at least one examined application claim is not patentably distinct from the reference claim(s) because the examined application claim is either anticipated by, or would have been obvious over, the reference claim(s). See, e.g., In re Berg, 140 F.3d 1428, 46 USPQ2d 1226 (Fed. Cir. 1998); In re Goodman, 11 F.3d 1046, 29 USPQ2d 2010 (Fed. Cir. 1993); In re Longi, 759 F.2d 887, 225 USPQ 645 (Fed. Cir. 1985); In re Van Ornum, 686 F.2d 937, 214 USPQ 761 (CCPA 1982); In re Vogel, 422 F.2d 438, 164 USPQ 619 (CCPA 1970); and In re Thorington, 418 F.2d 528, 163 USPQ 644 (CCPA 1969). A timely filed terminal disclaimer in compliance with 37 CFR 1.321(c) or 1.321(d) may be used to overcome an actual or provisional rejection based on a nonstatutory double patenting ground provided the conflicting application or patent either is shown to be commonly owned with this application, or claims an invention made as a result of activities undertaken within the scope of a joint research agreement. Effective January 1, 1994, a registered attorney or agent of record may sign a terminal disclaimer. A terminal disclaimer signed by the assignee must fully comply with 37 CFR 3.73(b). Claims 1-6 are rejected on the ground of nonstatutory double patenting over claims 1-10 of U. S. Patent No. 10,827,736 since the claims, if allowed, would improperly extend the "right to exclude" already granted in the patent. The subject matter claimed in the instant application is fully disclosed in the patent and is covered by the patent since the patent and the application are claiming common subject matter, as follows: “a method of supplementing carbon dioxide in an underwater environment by acquiring a container with a waterproof gaseous access, adding a respirating organism, a food source, and a grown substrate to the container, and sealing the container and fastening the sealed container underwater”. Claims 1-6 are rejected on the ground of nonstatutory double patenting over claims 1-7 of U. S. Patent No. 11,839,204 since the claims, if allowed, would improperly extend the "right to exclude" already granted in the patent. The subject matter claimed in the instant application is fully disclosed in the patent and is covered by the patent since the patent and the application are claiming common subject matter, as follows: “a method of supplementing carbon dioxide in an underwater environment by acquiring a container with a waterproof gaseous access, adding a respirating organism, a food source, and a grown substrate to the container, and sealing the container and fastening the sealed container underwater”. Claims 1-6 are rejected on the ground of nonstatutory double patenting over claims 1-14 of U. S. Patent No. 12,295,300 since the claims, if allowed, would improperly extend the "right to exclude" already granted in the patent. The subject matter claimed in the instant application is fully disclosed in the patent and is covered by the patent since the patent and the application are claiming common subject matter, as follows: “a method of supplementing carbon dioxide in an underwater environment by acquiring a container with a waterproof gaseous access, adding a respirating organism, a food source, and a grown substrate to the container, and sealing the container and fastening the sealed container underwater”. Conclusion Note, although the examiner recites certain excerpts for the prior art, MPEP 2141.02 VI states “PRIOR ART MUST BE CONSIDERED IN ITS ENTIRETY, INCLUDING DISCLOSURES THAT TEACH AWAY FROM THE CLAIMS”. Any inquiry concerning this communication or earlier communications from the examiner should be directed to TRINH T NGUYEN whose telephone number is (571)272-6906. The examiner can normally be reached on Monday-Friday 7:00-3:30. 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, Timothy Collins can be reached on 571-272-6886. 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). If you would like assistance from a USPTO Customer Service Representative or access to the automated information system, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /TRINH T NGUYEN/Primary Examiner, Art Unit 3644
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Prosecution Timeline

Apr 11, 2025
Application Filed
Dec 26, 2025
Non-Final Rejection — §DP
Apr 02, 2026
Response Filed

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
69%
Grant Probability
96%
With Interview (+27.5%)
2y 7m
Median Time to Grant
Low
PTA Risk
Based on 1024 resolved cases by this examiner. Grant probability derived from career allow rate.

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