Prosecution Insights
Last updated: October 27, 2026
Application No. 19/345,978

VERTICAL ISOLATION AND FLOW TREE SYSTEMS AND METHODS

Non-Final OA §102
Filed
Sep 30, 2025
Priority
Dec 17, 2024 — CIP of 18/984,204
Examiner
LAMBE, PATRICK F
Art Unit
3676
Tech Center
3600 — Transportation & Electronic Commerce
Assignee
Baker Hughes Holdings LLC
OA Round
1 (Non-Final)
62%
Grant Probability
Moderate
1-2
OA Rounds
1y 8m
Est. Remaining
92%
With Interview

Examiner Intelligence

Grants 62% of resolved cases
62%
Career Allowance Rate
378 granted / 605 resolved
+10.5% vs TC avg
Strong +29% interview lift
Without
With
+29.0%
Interview Lift
resolved cases with interview
Typical timeline
2y 9m
Avg Prosecution
17 currently pending
Career history
643
Total Applications
across all art units

Statute-Specific Performance

§101
1.4%
-38.6% vs TC avg
§103
54.4%
+14.4% vs TC avg
§102
29.7%
-10.3% vs TC avg
§112
13.6%
-26.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 605 resolved cases

Office Action

§102
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 . Applicant’s election without traverse of Invention III in the reply filed on 8/5/26 is acknowledged. The amended claims filed 8/5/26 are acknowledged; claims 14-25 are currently pending. 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)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention. Claim(s) 14-25 is/are rejected under 35 U.S.C. 102(a)(2) as being anticipated by Donald et al. (US 7111687). CLAIM 14: Donald discloses a system to modify a subsea Christmas tree (XT). The system comprises a bridging module (flow diverter apparatus; see Fig. 2) coupled to an inlet flow path of a processing apparatus (from production bore). The bridging module comprises: a first bridging module inlet (from first portion of flowpath); a first bridging module outlet to direct the flow toward the inlet flow path (outlet to external apparatus); a second bridging module inlet to receive the flow from the processing apparatus (return inlet); and a second bridging module outlet to direct the flow along a production flow path (“back to second portion… of flowpath”); and an adapter assembly coupled to a subsea control module, wherein the adapter assembly is configured to reroute one or more support systems for the XT (power pack shown in Fig. 5). CLAIM 15: The first bridging module inlet corresponds to an original XT flow path (see Fig. 2). CLAIM 16: The second bridging module outlet corresponds to a modified outlet flow path different from an original outlet flow path (see Fig. 2). CLAIM 17: Donald discloses a subsea system. The system comprises a Christmas tree (XT)(see Fig. 1, 2); a completion extending into a wellbore associated with the XT (see Fig. 2); a processing apparatus (200) having an apparatus inlet and an apparatus outlet; and a vertical isolation flow tree (VIFT) system (see Fig. 2, also col. 3, lines 14-17), comprising: a closure in a flow path of the XT (plug); a valve assembly fluidly connected to an outlet of the XT (see valves in Fig. 1); and a bridging module having a first inlet, a first outlet, a second inlet, and a second outlet; wherein the first inlet is fluidly coupled to a flow outlet of the valve assembly, the first outlet is fluidly coupled to the apparatus inlet, the second inlet is fluidly coupled to the apparatus outlet, and the second outlet is fluidly coupled to a production flow line (see discussion of claim 14 above). CLAIM 18: The closure in the flow path is at least one of a sleeve, a closed valve, or a plug (plug). CLAIM 19: The processing apparatus is a flow control module (FCM) (see .col. 5, line 44 – col. 6, line 10 describing a variety of processing apparatus options, including fluid riser which would be a FCM). CLAIM 20: A subsea control module (SCM) assembly including at least an adapter assembly, wherein the adapter assembly is configured to reroute at least a portion of one or more auxiliary supplies to the VIFT system (see discussion of claim 14 above). CLAIM 21: A sandwich plate, wherein the sandwich plate is configured to reroute at least a portion of the one or more auxiliary supplies to the VIFT system (power pack as discussed in claim 14). CLAIM 22: The bridging module is configured to close at least one of a flow outlet from the XT or a flow path towards a flowline connector (via valves). CLAIM 23: The second outlet is fluidly coupled to a first flowline connector (see discussion of claim 14 above). CLAIM 24: A second flowline connector in fluid communication with the second outlet is structurally supported by at least one of the first flowline connector, a structural element of the XT, or a structural element of a template (see Fig. 2; flowline connector to outside elements). CLAIM 25: The XT is a horizonal XT and the valve assembly is a vertical XT (see col. 3, lines 14-17). Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. The cited art shows similar Christmas tree arrangements. Any inquiry concerning this communication or earlier communications from the examiner should be directed to PATRICK F LAMBE whose telephone number is (571)270-1932. The examiner can normally be reached M-Th 10-4. 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, Tara Schimpf can be reached at (571)270-7741. 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. /PATRICK F LAMBE/Examiner, Art Unit 3676 /TARA SCHIMPF/Supervisory Patent Examiner, Art Unit 3676
Read full office action

Prosecution Timeline

Sep 30, 2025
Application Filed
Sep 30, 2026
Non-Final Rejection mailed — §102
Oct 07, 2026
Examiner Interview Summary
Oct 07, 2026
Applicant Interview (Telephonic)

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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
92%
With Interview (+29.0%)
2y 9m (~1y 8m remaining)
Median Time to Grant
Low
PTA Risk
Based on 605 resolved cases by this examiner. Grant probability derived from career allowance rate.

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