Prosecution Insights
Last updated: October 02, 2026
Application No. 18/632,876

LAUNDRY APPLIANCE AND VENTILATION ASSEMBLY FOR THE SAME

Non-Final OA §103
Filed
Apr 11, 2024
Examiner
WAN, DEMING
Art Unit
Tech Center
Assignee
Haier US Appliance Solutions Inc.
OA Round
2 (Non-Final)
76%
Grant Probability
Favorable
2-3
OA Rounds
0m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 76% — above average
76%
Career Allowance Rate
720 granted / 942 resolved
+16.4% vs TC avg
Strong +42% interview lift
Without
With
+42.4%
Interview Lift
resolved cases with interview
Typical timeline
2y 6m
Avg Prosecution
35 currently pending
Career history
961
Total Applications
across all art units

Statute-Specific Performance

§101
0.5%
-39.5% vs TC avg
§103
51.3%
+11.3% vs TC avg
§102
19.4%
-20.6% vs TC avg
§112
25.1%
-14.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 942 resolved cases

Office Action

§103
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 § 103 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 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. This application currently names joint inventors. In considering patentability of the claims the examiner presumes that the subject matter of the various claims was commonly owned as of the effective filing date of the claimed invention(s) absent any evidence to the contrary. Applicant is advised of the obligation under 37 CFR 1.56 to point out the inventor and effective filing dates of each claim that was not commonly owned as of the effective filing date of the later invention in order for the examiner to consider the applicability of 35 U.S.C. 102(b)(2)(C) for any potential 35 U.S.C. 102(a)(2) prior art against the later invention. Claims 1, 3-7 are rejected under 35 U.S.C. 103 as being unpatentable over US Patent Publication 2006/0179896 to Lim in view of KR2019/0096496 to Kwon (The art rejection is made based on the respective English translation by PE2E). In Reference to Claim 1 Lim discloses a laundry appliance comprising: a cabinet (Fig. 3A, annotated by the examiner); a tub (Fig. 3A, 50) positioned within the cabinet, the tub defining a tub outlet and a tub inlet (As showed in Fig. 1A); a laundry basket (Fig. 3A, 20) rotatably mounted within the tub, the laundry basket defining a chamber (As showed in Fig. 3A, the chamber surrounded by basket 20) for receipt of articles for washing or drying; a motor (Fig. 1A, 44) mounted within the cabinet; and an impeller (Fig. 1A, 41) in mechanical communication with the motor to motivate rotation of the impeller about an axial direction, the impeller being rotatable along a rotational direction about the axial direction (As showed in Fig. 1A) to urge a flow of air (As showed in Fig. 3A, the flow of air marked by arrow, the Office considers that the air flow is circulated (urge) by impeller) from the chamber of the laundry basket. PNG media_image1.png 608 562 media_image1.png Greyscale Lim does not teach the detail of the impeller Kwon teaches the impeller comprising a baseplate (Fig. 8, annotated by the examiner), and a plurality of radially accurate vanes (Fig. 8, 110) supported on the baseplate, the plurality of radially arcuate vanes each extending rearward relative to the rotational direction from an inner end (Fig. 8, annotated by the examiner) proximal to the axial direction to an outer end (Fig. 8, annotated by the examiner) distal to the axial direction; and a housing (Fig. 8, 30), the housing defining a housing cavity (Fig. 8, as showed) within which the impeller is positioned, an entrance upstream (Fig. 8, annotated by the examiner) from the impeller to permit air thereto, a cutoff (Fig. 8, 34) disposed above the impeller, and a transition duct (Fig. 8, annotated by the examiner) extending between the cutoff and an exhaust exit (Fig. 8, 32) of the housing. It would have been obvious to one with ordinary skill in the art before the effective filing date of the claimed invention to incorporate teaching from Kwon. Doing so, would result in the air blower design of Kwon being used in the air duct of Lim. Both inventions of Kwon and Lim having impeller type air blower to move air flow, Kwon teaches an air blower design can effectively reduce blade pass frequency and noise. In Reference to Claims 3 and 4 The combination of Lim and Kwon as applied to Claim 1 does not teach the relative size between the blade and the cutoff. According to MPEP: the Federal Circuit held that, where the only difference between the prior art and the claims was a recitation of relative dimensions of the claimed device and a device having the claimed relative dimensions would not perform differently than the prior art device, the claimed device was not patentably distinct from the prior art device. In Reference to Claim 5 Lim discloses the impeller having an impeller guide (Fig. 3A, annotated by the examiner) Lim does not teach the detail of the impeller. Kwon teaches the impeller defines an impeller outlet (Fig. 8, annotated by the examiner) and an impeller width (Fig. 8, annotated by the examiner) along the axial direction at the impeller outlet, wherein the housing further comprises an impeller guide (Fig. 8, annotated by the examiner) extending about the impeller within the housing cavity and radially inward from the cutoff, The combination of Kim and Kwon as applied to Claim 5 does not teach the guide outlet having a GO width less than the impeller width. According to MPEP: the Federal Circuit held that, where the only difference between the prior art and the claims was a recitation of relative dimensions of the claimed device and a device having the claimed relative dimensions would not perform differently than the prior art device, the claimed device was not patentably distinct from the prior art device. In Reference to Claims 6, 7 Lim discloses the impeller to move the air in the air duct. Lim does not teach the detail of the impeller. Kwon teaches the impeller defines an impeller inlet (Fig. 6, 21) extending concentrically with the entrance along the axial direction, and wherein the housing further comprises an interior lip (Fig. 6, annotated by the examiner) extending axially along the entrance into the impeller inlet. the impeller further comprises a faceplate (Fig. 6, 12) supported on the plurality of radially arcuate vanes opposite of the baseplate, the faceplate extending radially from an inner edge proximal to the axial direction to an outer edge distal to the axial direction. It would have been obvious to one with ordinary skill in the art before the effective filing date of the claimed invention to incorporate teaching from Kwon. Doing so, would result in the air blower design of Kwon being used in the air duct of Lim. Both inventions of Kwon and Lim having impeller type air blower to move air flow, Kwon teaches an air blower design can effectively reduce blade pass frequency and noise. PNG media_image2.png 520 725 media_image2.png Greyscale PNG media_image3.png 487 642 media_image3.png Greyscale Claims 8 and 9 are rejected under 35 U.S.C. 103 as being unpatentable over the combination of Lim and Kwon as applied to claim 7 above, and further in view of US Patent3,217,976 to Downs. In Reference to Claims 8 and 9 The combination of Lim and Kwon as applied to Claim 7 teaches the impeller type air blower. The combination of Lim and Kwon as applied to Claim 7 does not teach the detail of the blade and the top cover of the blade. Downs teaches a maximum impeller (Fig. 2, annotated by the examiner) width along the axial direction at the inner edge and a minimum impeller width (Fig. 2, annotated by the examiner) along the axial direction at the outer edge. PNG media_image4.png 517 505 media_image4.png Greyscale the faceplate defines a curved outer surface (Fig. 2, annotated by the examiner), wherein the housing further comprises a front panel defining an inner panel surface directed toward the impeller, and wherein the inner panel surface is complementary to the curved outer surface. It would have been obvious to one with ordinary skill in the art before the effective filing date of the claimed invention to incorporate teachings from Downs into the combination of Lim and Kwon as applied to Claim 7. Doing so, would result in the blade and the cover design of Downs being used in the blower design of Lim. Lim has the impeller blower to move the air flow in the air duct, Downs teaches an impeller design to remove the discharge turbulence, so the efficiency of the impeller would be improved. Claims 10, 12-16 are rejected under 35 U.S.C. 103 as being unpatentable over US Patent 2021/0062400 to Yu in view of Kwon. In Reference to Claim 10 Yu discloses a ventilation assembly for a laundry appliance, the ventilation assembly comprising: a motor (Fig. 10, 114); and an impeller (Fig. 10, 110) in mechanical communication with the motor to motivate rotation of the impeller about an axial direction, the impeller being rotatable along a rotational direction about the axial direction to urge a flow of air, the impeller comprising a baseplate (Fig. 10, annotated by the examiner), and a plurality of radially accurate vanes (Fig. 10, supported on the baseplate, the plurality of radially arcuate vanes each extending rearward relative to the rotational direction from an inner end (Fig. 10. Annotated by the examiner) proximal to the axial direction to an outer end distal to the axial direction. PNG media_image5.png 534 680 media_image5.png Greyscale Yu does not teach the detail of the blade. Kwon teaches the impeller comprising a baseplate (Fig. 8, annotated by the examiner), and a plurality of radially accurate vanes (Fig. 8, 110) supported on the baseplate, the plurality of radially arcuate vanes each extending rearward relative to the rotational direction from an inner end (Fig. 8, annotated by the examiner) proximal to the axial direction to an outer end (Fig. 8, annotated by the examiner) distal to the axial direction; and a housing (Fig. 8, 30), the housing defining a housing cavity (Fig. 8, as showed) within which the impeller is positioned, an entrance upstream (Fig. 8, annotated by the examiner) from the impeller to permit air thereto, a cutoff (Fig. 8, 34) disposed above the impeller, and a transition duct (Fig. 8, annotated by the examiner) extending between the cutoff and an exhaust exit (Fig. 8, 32) of the housing. It would have been obvious to one with ordinary skill in the art before the effective filing date of the claimed invention to incorporate teaching from Kwon. Doing so, would result in the air blower design of Kwon being used in the air duct of Lim. Both inventions of Kwon and Yu having impeller type air blower to move air flow, Kwon teaches an air blower design can effectively reduce blade pass frequency and noise. In Reference to Claims 12 and 13 The combination of Yu and Kwon as applied to Claim 10 does not teach the relative size between the blade and the cutoff. According to MPEP: the Federal Circuit held that, where the only difference between the prior art and the claims was a recitation of relative dimensions of the claimed device and a device having the claimed relative dimensions would not perform differently than the prior art device, the claimed device was not patentably distinct from the prior art device. In Reference to Claim 14 Yu discloses the impeller having an impeller guide (Fig. 4, annotated by the examiner) PNG media_image6.png 365 476 media_image6.png Greyscale Yu does not teach the detail of the impeller. Kwon teaches the impeller defines an impeller outlet (Fig. 8, annotated by the examiner) and an impeller width (Fig. 8, annotated by the examiner) along the axial direction at the impeller outlet, wherein the housing further comprises an impeller guide (Fig. 8, annotated by the examiner) extending about the impeller within the housing cavity and radially inward from the cutoff, The combination of Yu and Kwon as applied to Claim 5 does not teach the guide outlet having a GO width less than the impeller width. According to MPEP: the Federal Circuit held that, where the only difference between the prior art and the claims was a recitation of relative dimensions of the claimed device and a device having the claimed relative dimensions would not perform differently than the prior art device, the claimed device was not patentably distinct from the prior art device. In Reference to Claim 15 Yu discloses the impeller defines an impeller inlet (Fig. 9, annotated by the examiner) extending concentrically with the entrance along the axial direction, and wherein the housing further comprises an interior lip (Fig. 9, annotated by the examiner) extending axially along the entrance into the impeller inlet. In Reference to Claim 16 Yu discloses the impeller to move the air in the air duct. Yu does not teach the detail of the impeller. Kwon teaches the impeller further comprises a faceplate (Fig. 6, 12) supported on the plurality of radially arcuate vanes opposite of the baseplate, the faceplate extending radially from an inner edge proximal to the axial direction to an outer edge distal to the axial direction. It would have been obvious to one with ordinary skill in the art before the effective filing date of the claimed invention to incorporate teaching from Kwon. Doing so, would result in the air blower design of Kwon being used in the air duct of Yu. Both inventions of Kwon and Yu having impeller type air blower to move air flow, Kwon teaches an air blower design can effectively reduce blade pass frequency and noise. Claims 17 and 18 are rejected under 35 U.S.C. 103 as being unpatentable over Yu and Kwon as applied to claim 16 above, and further in view of Downs. In Reference to Claims 17 and 18 The combination of Yu and Kwon as applied to Claim 7 teaches the impeller type air blower. The combination of Yu and Kwon as applied to Claim 7 does not teach the detail of the blade and the top cover of the blade. Downs teaches a maximum impeller (Fig. 2, annotated by the examiner) width along the axial direction at the inner edge and a minimum impeller width (Fig. 2, annotated by the examiner) along the axial direction at the outer edge. a faceplate defines a curved outer surface (Fig. 2, annotated by the examiner), wherein the housing further comprises a front panel defining an inner panel surface directed toward the impeller, and wherein the inner panel surface is complementary to the curved outer surface. It would have been obvious to one with ordinary skill in the art before the effective filing date of the claimed invention to incorporate teachings from Downs into the combination of Yu and Kwon as applied to Claim 7. Doing so, would result in the blade and the cover design of Downs being used in the blower design of Lim. Yu has the impeller blower to move the air flow in the air duct, Downs teaches an impeller design to remove the discharge turbulence, so the efficiency of the impeller would be improved. Claims 19-22 are rejected under 35 U.S.C. 103 as being unpatentable over Yu in view of Kwon, and further in view of Downs. In Reference to Claim 19 Yu discloses a ventilation assembly for a laundry appliance, the ventilation assembly comprising: a motor (Fig. 10, 114); and an impeller (Fig. 10, 110) in mechanical communication with the motor to motivate rotation of the impeller about an axial direction, the impeller being rotatable along a rotational direction about the axial direction to urge a flow of air, the impeller comprising a baseplate (Fig. 10, annotated by the examiner), and a plurality of radially accurate vanes (Fig. 10, supported on the baseplate, the plurality of radially arcuate vanes each extending rearward relative to the rotational direction from an inner end (Fig. 10. Annotated by the examiner) proximal to the axial direction to an outer end distal to the axial direction. Yu does not teach the detail of the blade. Kwon teaches the impeller comprising a baseplate (Fig. 8, annotated by the examiner), and a plurality of radially accurate vanes (Fig. 8, 110) supported on the baseplate, the plurality of radially arcuate vanes each extending rearward relative to the rotational direction from an inner end (Fig. 8, annotated by the examiner) proximal to the axial direction to an outer end (Fig. 8, annotated by the examiner) distal to the axial direction; and a housing (Fig. 8, 30), the housing defining a housing cavity (Fig. 8, as showed) within which the impeller is positioned, an entrance upstream (Fig. 8, annotated by the examiner) from the impeller to permit air thereto, a cutoff (Fig. 8, 34) disposed above the impeller, and a transition duct (Fig. 8, annotated by the examiner) extending between the cutoff and an exhaust exit (Fig. 8, 32) of the housing. It would have been obvious to one with ordinary skill in the art before the effective filing date of the claimed invention to incorporate teaching from Kwon. Doing so, would result in the air blower design of Kwon being used in the air duct of Lim. Both inventions of Kwon and Yu having impeller type air blower to move air flow, Kwon teaches an air blower design can effectively reduce blade pass frequency and noise. The combination of Yu and Kwon as applied to Claim 7 teaches the impeller type air blower. The combination of Yu and Kwon as applied to Claim 7 does not teach the detail of the blade and the top cover of the blade. Downs teaches a maximum impeller (Fig. 2, annotated by the examiner) width along the axial direction at the inner edge and a minimum impeller width (Fig. 2, annotated by the examiner) along the axial direction at the outer edge. a faceplate defines a curved outer surface (Fig. 2, annotated by the examiner), wherein the housing further comprises a front panel defining an inner panel surface directed toward the impeller, and wherein the inner panel surface is complementary to the curved outer surface. It would have been obvious to one with ordinary skill in the art before the effective filing date of the claimed invention to incorporate teachings from Downs into the combination of Yu and Kwon as applied to Claim 19. Doing so, would result in the blade and the cover design of Downs being used in the blower design of Lim. Yu has the impeller blower to move the air flow in the air duct, Downs teaches an impeller design to remove the discharge turbulence, so the efficiency of the impeller would be improved. In Reference to Claim 20 The combination of Yu, Kwon and Downs as applied to Claim 19 does not teach the relative size between the blade and the cutoff. According to MPEP: the Federal Circuit held that, where the only difference between the prior art and the claims was a recitation of relative dimensions of the claimed device and a device having the claimed relative dimensions would not perform differently than the prior art device, the claimed device was not patentably distinct from the prior art device. In Reference to Claim 21 Yu does not teach the detail of the impeller. Kwon teaches the impeller defines an impeller outlet (Fig. 8, annotated by the examiner) and an impeller width (Fig. 8, annotated by the examiner) along the axial direction at the impeller outlet, wherein the housing further comprises an impeller guide (Fig. 8, annotated by the examiner) extending about the impeller within the housing cavity and radially inward from the cutoff, The combination of Yu, Kwon and Downs as applied to Claim 21 does not teach the guide outlet having a GO width less than the impeller width. According to MPEP: the Federal Circuit held that, where the only difference between the prior art and the claims was a recitation of relative dimensions of the claimed device and a device having the claimed relative dimensions would not perform differently than the prior art device, the claimed device was not patentably distinct from the prior art device. In Reference to Claim 22 Yu discloses the impeller defines an impeller inlet (Fig. 9, annotated by the examiner) extending concentrically with the entrance along the axial direction, and wherein the housing further comprises an interior lip (Fig. 9, annotated by the examiner) extending axially along the entrance into the impeller inlet. Response to Arguments Upton further consideration, the Allowability of Claims 2 and 11 has been withdrawn. A new ground of Claim rejection is issued as above claim rejection section. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to DEMING WAN whose telephone number is (571)272-1410. The examiner can normally be reached Mon-Thur: 8 am to 6 PM. 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, Michael Hoang can be reached at 57122726460. 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. DEMING . WAN Examiner Art Unit 3762 /DEMING WAN/Primary Examiner, Art Unit 3762 9/4/26
Read full office action

Prosecution Timeline

Apr 11, 2024
Application Filed
Jun 26, 2026
Non-Final Rejection mailed — §103
Aug 25, 2026
Response Filed
Sep 16, 2026
Non-Final Rejection mailed — §103 (current)

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

2-3
Expected OA Rounds
76%
Grant Probability
99%
With Interview (+42.4%)
2y 6m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 942 resolved cases by this examiner. Grant probability derived from career allowance rate.

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