Prosecution Insights
Last updated: April 17, 2026
Application No. 18/412,533

System And Method for Direct Air Capture of CO2 or methane From Atmospheric or Underwater Vented Sources

Non-Final OA §102§112
Filed
Jan 14, 2024
Examiner
JONES, CHRISTOPHER P
Art Unit
1776
Tech Center
1700 — Chemical & Materials Engineering
Assignee
unknown
OA Round
1 (Non-Final)
76%
Grant Probability
Favorable
1-2
OA Rounds
2y 6m
To Grant
99%
With Interview

Examiner Intelligence

Grants 76% — above average
76%
Career Allow Rate
1023 granted / 1346 resolved
+11.0% vs TC avg
Strong +25% interview lift
Without
With
+24.8%
Interview Lift
resolved cases with interview
Typical timeline
2y 6m
Avg Prosecution
39 currently pending
Career history
1385
Total Applications
across all art units

Statute-Specific Performance

§101
0.7%
-39.3% vs TC avg
§103
41.6%
+1.6% vs TC avg
§102
30.9%
-9.1% vs TC avg
§112
20.4%
-19.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1346 resolved cases

Office Action

§102 §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 . 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 1-12 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. Regarding claims 1, 5 and 9, the claims recite “Direct air capture” and then go on to recite capturing CO2 or methane from various emission sources. However, “direct air capture” is the capture of CO2 from ambient air, not from emission sources or from water. This renders the claims indefinite. Regarding claims 1, 5 and 9, the preamble of the claim recites a system but the body of the claim is written as a method. It is therefore unclear what structure is being claimed. It is unclear whether or not the “pipe” is being claimed as part of the system. Regarding claim 2, “vent” lacks antecedent basis in the claim. Regarding claims 2, 6 and 10, the “vent hood device” lacks antecedent basis in the claim. Furthermore, it is unclear whether or not the “vent hood” is being claimed as part of the “system”. Furthermore, if the “vent hood” is being claimed, it is unclear how it is structurally connected to the rest of the system. E.g. how is the vent hood structurally related to the pipe (claim 2) or underwater tube (claim 6)? Regarding claims 2-4, 6-8 and 10-12, “wherein is configured…” is unclear. It is unclear what is “configured”. Regarding claims 3, 7 and 11, the “supercharger gas/liquid device” lacks antecedent in the claim. Furthermore, it is unclear whether or not the “supercharger gas/liquid device” is being claimed as part of the “system”. Furthermore, if the “supercharger gas/liquid device” is being claimed, it is unclear how it is structurally connected to the rest of the system. Regarding claims 4, 8 and 12 the “positive displacement gas/liquids compressor” lacks antecedent in the claim. Furthermore, it is unclear whether or not the “positive displacement gas/liquids compressor” is being claimed as part of the “system” recited in claim 1. Regarding claim 6, “the vacuum pressure” lacks antecedent basis in the claim. Regarding claim 9, “the water” lacks antecedent basis in the claim. Regarding claim 10, “to prevent to control the backpressure” is unclear and indefinite. Regarding claim 10, “the underwater tube” lacks antecedent basis in the claim. Regarding claims 10-12, it is unclear how the “vent hood”, “supercharger gas/liquids device” and “positive displacement gas/liquid compressor” is related to the capture and storage of CO2 or methane from under the water, as recited in claim 9. Claim Rejections - 35 USC § 102 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. Claims 1, 2, 5, 6, 9 and 10 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Ernst USPN 12,006,014 B1. Regarding claims 1 and 5, Ernst discloses a system comprising: direct air capture and storage of CO2 or Methane from a pipe venting CO2 or methane into earth's atmosphere (column 6, lines 3-30). Regarding claim 9, “from under the water” is deemed to be a statement with regard to the intended use and is not further limiting in so far as the structure of the product is concerned. In article claims, a claimed intended use must result in a structural difference between the claimed invention and the prior art in order to patentably distinguish the claimed invention from the prior art. MPEP § 2111.02. Regarding claim 2, Ernst discloses that the system includes a vent hood (figure 2: vent hood 100 vents exhaust to exhaust cleaning system 200; column 6, lines 3-30). Furthermore, the system would have less backpressure than some other hypothetical system; therefore, it is deemed to be configured to prevent backpressure in the vented pipe. Regarding claims 6 and 10, Ernst discloses a valve member that is pressure actuated (column 7, lines 44-50). This is capable of controlling vacuum pressure. Claims 1, 3, 5, 7, 9 and 11 are rejected under 35 U.S.C. 102(a)(1) as being anticipated Finkelshtain USPN 10,530,001 B2. Regarding claims 1 and 5, Finkelshtain discloses a system comprising: direct air capture and storage of CO2 or Methane from a pipe venting CO2 or methane into earth's atmosphere (column 2, lines 12-24). Regarding claim 9, “from under the water” is deemed to be a statement with regard to the intended use and is not further limiting in so far as the structure of the product is concerned. In article claims, a claimed intended use must result in a structural difference between the claimed invention and the prior art in order to patentably distinguish the claimed invention from the prior art. MPEP § 2111.02. Regarding claims 3, 7 and 11, Finkelshtain discloses that the system is connected to a supercharger (column 2, lines 12-24). The supercharger could be driven from renewable energy. Claims directed to an apparatus must be distinguished in the prior art in terms of structure rather than function. MPEP 2114. Claims 1, 4, 5, 8, 9 and 12 are rejected under 35 U.S.C. 102(a)(1) as being anticipated Hosford USPA 2006/0248921 A1. Regarding claims 1 and 5, Hosford discloses a system comprising: direct air capture and storage of CO2 or Methane from a pipe venting CO2 or methane into earth's atmosphere (paragraph 40). Regarding claim 9, “from under the water” is deemed to be a statement with regard to the intended use and is not further limiting in so far as the structure of the product is concerned. In article claims, a claimed intended use must result in a structural difference between the claimed invention and the prior art in order to patentably distinguish the claimed invention from the prior art. MPEP § 2111.02. Regarding claims 4, 8 and 12, Hosford discloses a positive displacement compressor (paragraph 55). The compressor could be driven from renewable energy. Claims directed to an apparatus must be distinguished in the prior art in terms of structure rather than function. MPEP 2114. Claim 9 is rejected under 35 U.S.C. 102(a)(1) as being anticipated Harper USPA 2015/0354451 A1. Regarding claim 9, Harper discloses a system comprising: direct air capture and storage of CO2 or methane from under the water before it enters into earth's atmosphere (paragraph 26). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to CHRISTOPHER P JONES whose telephone number is (571)270-7383. The examiner can normally be reached 9AM-6PM EST M-F. 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. /CHRISTOPHER P JONES/Primary Examiner, Art Unit 1776
Read full office action

Prosecution Timeline

Jan 14, 2024
Application Filed
Jan 29, 2026
Non-Final Rejection — §102, §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12599865
Sealing Interface, Air Dryer Cartridge and Air Treatment Device
2y 5m to grant Granted Apr 14, 2026
Patent 12599869
GAS SEPARATION METHOD AND GAS SEPARATION APPARATUS
2y 5m to grant Granted Apr 14, 2026
Patent 12594519
METHODS FOR REGENERATING A FILTER MEDIUM AND CLEANING FLUE GAS
2y 5m to grant Granted Apr 07, 2026
Patent 12589354
ACIDIC GAS SEPARATION DEVICE, AIR PURIFIER, AIR CONDITIONER, AND ACIDIC GAS CONCENTRATION DEVICE
2y 5m to grant Granted Mar 31, 2026
Patent 12590284
SYSTEM FOR THE CAPTURE AND PURIFICATION OF CO2 AND PURIFICATION UNIT OF SAID SYSTEM
2y 5m to grant Granted Mar 31, 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
76%
Grant Probability
99%
With Interview (+24.8%)
2y 6m
Median Time to Grant
Low
PTA Risk
Based on 1346 resolved cases by this examiner. Grant probability derived from career allow rate.

Sign in for Full Analysis

Enter your email to receive a magic link. No password needed.

Free tier: 3 strategy analyses per month