Prosecution Insights
Last updated: August 16, 2026
Application No. 18/892,434

MULTI-SPLIT AIR CONDITIONER OUTDOOR UNIT, INSTALLATION METHOD, AND AIR CONDITIONING SYSTEM

Final Rejection §103
Filed
Sep 22, 2024
Priority
Sep 28, 2023 — CN 202311279662.2
Examiner
FURDGE, LARRY L
Art Unit
3763
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Carrier Corporation
OA Round
2 (Final)
62%
Grant Probability
Moderate
3-4
OA Rounds
1y 4m
Est. Remaining
80%
With Interview

Examiner Intelligence

Grants 62% of resolved cases
62%
Career Allowance Rate
486 granted / 779 resolved
-7.6% vs TC avg
Strong +17% interview lift
Without
With
+17.2%
Interview Lift
resolved cases with interview
Typical timeline
3y 3m
Avg Prosecution
41 currently pending
Career history
812
Total Applications
across all art units

Statute-Specific Performance

§101
0.9%
-39.1% vs TC avg
§103
54.0%
+14.0% vs TC avg
§102
8.8%
-31.2% vs TC avg
§112
31.7%
-8.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 779 resolved cases

Office Action

§103
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 . Status of Claims This Office Action is in response to the remarks and amendments filed on 6/19/2026. Claims 1-15 are pending for consideration in this Office Action. Response to Amendment The rejections pursuant to 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph have been withdrawn in light of the amendments filed. Claim Rejections - 35 USC § 103 The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. The factual inquiries for establishing a background for determining obviousness under 35 U.S.C. 103 are summarized as follows: 1. Determining the scope and contents of the prior art. 2. Ascertaining the differences between the prior art and the claims at issue. 3. Resolving the level of ordinary skill in the pertinent art. 4. Considering objective evidence present in the application indicating obviousness or nonobviousness. Claim(s) 15 is/are rejected under 35 U.S.C. 103 as being unpatentable over Liu et al. (US2017/0010027) in view of Tamaki et al. (US2013/0312443). Regarding Claim 15, Liu teaches a multi-split air conditioner outdoor unit [fig 2], comprising: a manifold [at least the pipe containing valve 10] connected between a discharge port of a compressor and a first port [at least port A of valve 4; 0040-0043; fig 2]; a valve [10] disposed in the first manifold [0040-0043; fig 2]. Liu does not explicitly teach a second manifold connected between a suction port of the compressor and a second port; and a second valve disposed in the second manifold. However, Tamaki teaches a refrigeration cycle apparatus [fig 1] having a manifold connected between a suction port of a compressor [1] and a port [see fig 1; Drawing I]; and a valve [21] disposed in the second manifold [See fig 1; Drawing I] where one of ordinary skill in the art could have combined the elements as claimed by known methods and that in combination, each element would perform the same function as it did separately and one of ordinary skills would have recognized that the results of the combination were predictable i.e. provide pressure equalizing control for the system [0079]. Therefore, it would have been obvious to a person of ordinary skill in the art before the effective filing date of the invention to modify the assembly of Liu to have a second manifold connected between a suction port of the compressor and a second port; and a second valve disposed in the second manifold in view of the teachings of Tamaki where the elements could have been combined by known methods with no change in their respective functions, and the combination would have yielded predictable results i.e. provide pressure equalizing control for the system. PNG media_image1.png 660 516 media_image1.png Greyscale Drawing I Allowable Subject Matter Claims 1-14 are allowed. The following is a statement of reasons for the indication of allowable subject matter: Regarding Claim 1, the prior art does not teach “…a first manifold connected between the discharge port of the compressor and the first port; a third valve disposed in the first manifold; a second manifold connected between the suction port of the compressor and the third port; and a switching device connected to the second manifold, the fourth port, and the second valve, and capable of being switched between a first switching state and a second switching state, in the first switching state, the switching device connects the fourth port to the second valve, and in the second switching state, the switching device connects the second manifold to the second valve.” Regarding Claim 10, the prior art does not teach “…the multi-split air conditioner outdoor unit further comprises: a first manifold connected between the discharge port of the compressor and the first port; a third valve disposed in the first manifold; a third manifold connected between the suction port of the compressor and the third port; and a fourth valve disposed in the third manifold.” Conclusion Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). 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. Any inquiry concerning this communication or earlier communications from the examiner should be directed to LARRY L FURDGE whose telephone number is (313)446-4895. The examiner can normally be reached M-R 6a-3p; F 6a-10a. 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, Jerry Fletcher can be reached at 571-270-5054. 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. /LARRY L FURDGE/Primary Examiner, Art Unit 3763
Read full office action

Prosecution Timeline

Sep 22, 2024
Application Filed
Mar 19, 2026
Non-Final Rejection mailed — §103
Jun 19, 2026
Response Filed
Aug 05, 2026
Final Rejection mailed — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12704271
HEAT EXCHANGER AND AIR-CONDITIONING APPARATUS
2y 4m to grant Granted Aug 11, 2026
Patent 12691731
VARIABLE SPEED COMPRESSOR CONTROL SCHEME FOR LUBRICANT CONTROL
2y 1m to grant Granted Jul 28, 2026
Patent 12693054
REFRIGERANT FLOW PATH MODULE AND HEAT SOURCE UNIT
1y 3m to grant Granted Jul 28, 2026
Patent 12687333
REFRIGERATOR
1y 11m to grant Granted Jul 21, 2026
Patent 12681512
THERMOSTAT WITH INTEGRATED PARTICLE SENSOR
11y 4m to grant Granted Jul 14, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

Strategy Recommendation AI-generated — please review before filing

Get a prosecution strategy drawn from examiner precedents, rejection analysis, and claim mapping.
Typically takes 5-10 seconds — AI-generated, attorney review required before filing

Prosecution Projections

3-4
Expected OA Rounds
62%
Grant Probability
80%
With Interview (+17.2%)
3y 3m (~1y 4m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 779 resolved cases by this examiner. Grant probability derived from career allowance 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