Prosecution Insights
Last updated: April 19, 2026
Application No. 18/371,861

VENTILATION FAN WITH ANTI-REVERSAL DEVICE

Non-Final OA §103
Filed
Sep 22, 2023
Examiner
HERRMANN, JOSEPH S
Art Unit
3746
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Dacs A/S
OA Round
3 (Non-Final)
63%
Grant Probability
Moderate
3-4
OA Rounds
3y 2m
To Grant
99%
With Interview

Examiner Intelligence

Grants 63% of resolved cases
63%
Career Allow Rate
303 granted / 482 resolved
-7.1% vs TC avg
Strong +41% interview lift
Without
With
+41.4%
Interview Lift
resolved cases with interview
Typical timeline
3y 2m
Avg Prosecution
36 currently pending
Career history
518
Total Applications
across all art units

Statute-Specific Performance

§101
0.8%
-39.2% vs TC avg
§103
42.1%
+2.1% vs TC avg
§102
22.1%
-17.9% vs TC avg
§112
31.2%
-8.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 482 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 . Continued Examination Under 37 CFR 1.114 A request for continued examination under 37 CFR 1.114, including the fee set forth in 37 CFR 1.17(e), was filed in this application after final rejection. Since this application is eligible for continued examination under 37 CFR 1.114, and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114. Applicant's submission filed on 09/16/2025 has been entered. Specification The amendments to the specification was received on 08/21/2025. These amendments are ACCEPTABLE. Drawings The drawings were received on 08/21/2025. These drawings are ACCEPTABLE. Applicant’s amendments, filed 08/21/2025, have made the drawing objections moot. The drawing objections of 06/20/2025 have been withdrawn. The drawings are objected to under 37 CFR 1.83(a). The drawings must show every feature of the invention specified in the claims. Therefore, the features: “an annular hub-plate concentrically mounted on the hub” Claim 1; and “an annular hub-plate concentrically mounted on the hub” Claim 16. must be shown or the feature(s) canceled from the claim(s). No new matter should be entered. In order to illustrate the hub-plate 5 concentrically mounted on the hub 3 as claimed, the drawings should illustrate element 5 being concentrically mounted to element 3. Corrected drawing sheets in compliance with 37 CFR 1.121(d) are required in reply to the Office action to avoid abandonment of the application. Any amended replacement drawing sheet should include all of the figures appearing on the immediate prior version of the sheet, even if only one figure is being amended. The figure or figure number of an amended drawing should not be labeled as “amended.” If a drawing figure is to be canceled, the appropriate figure must be removed from the replacement sheet, and where necessary, the remaining figures must be renumbered and appropriate changes made to the brief description of the several views of the drawings for consistency. Additional replacement sheets may be necessary to show the renumbering of the remaining figures. Each drawing sheet submitted after the filing date of an application must be labeled in the top margin as either “Replacement Sheet” or “New Sheet” pursuant to 37 CFR 1.121(d). If the changes are not accepted by the examiner, the applicant will be notified and informed of any required corrective action in the next Office action. The objection to the drawings will not be held in abeyance. Claim Interpretation It is noted that the language “anti-reversal device” does not invoke 112f, because the structure for performing the function – annular hub-plate, annular arrangement of a first number of teeth, and a second number of latches – is recited in the independent claims. 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) 1-7, 10-11, and 13-16 is/are rejected under 35 U.S.C. 103 as being unpatentable over Han US 2006/0284500 in view of WO 2017/107051. Examiners Note: For the purposes of examining the instant application, the examiners submitted English translation of WO 2017/107051, submitted with this office action, is referenced hereinafter. Regarding Claim 1: Han US 2006/0284500 discloses the limitations: A ventilation fan (the ventilation fan is defined by the sum of its parts) comprising: an electric motor (= 500,600,710, Fig 3) driving a rotor (730, Fig 3); the rotor 730 having a hub 732 mounted on a drive shaft of the electric motor (i.e. mounted on drive shaft 720 via bearing 733, ¶0044, Fig 3); a plurality of blades (240, Fig 1) mounted to the hub (Fig 1 teaches that it is known in the art to fix a plurality of fan blades 240 to the motor rotor/hub via motor shaft 230; thus it would be obvious to one of ordinary skill in the art at the time the invention was filed to have fan blades 240 (from prior art Fig 1) mounted to drive shaft 720 in order to operate a fan with the motor as known in the art; it is noted that in the combination the fan blades 240 would be mounted to the hub 732 via drive shaft 720); and an anti-reversal device (the anti-reversal device is defined by the sum of its parts) concentrically mounted between the motor and the rotor (i.e. concentrically mounted between the part of casing 500 which has elements 750 extending therefrom and rotor 730 as seen in Fig 3), the anti-reversal device comprising: an annular hub-plate (the annular hub-plate is defined by the sum of its parts and includes elements 760,780,781, ¶0048,¶0051, Figs 3-4) concentrically mounted on an annular arrangement of a first number of teeth (= annular arrangement of stationary blocks 750 shown in Fig 4, ¶0045-¶0047; first number = eight, Fig 4) provided on a stationary part of the motor (stationary part of the motor = the part of casing 500 which has elements 750 extending therefrom as seen in Figs 3-4) and concentric with the hub-plate (as understood from Figs 3-4 the teeth 750 are concentric with element 781 of the annular hub-plate); wherein the hub-plate comprises a second number of latches (= latch 770 in Fig 5; second number = one, ¶0048-¶0053): wherein the latch is pivotable and does not engage the annular arranged teeth if the hub is rotated in a predetermined first rotational direction (when the hub 732 is rotated in the forward direction, the latch 770 does not engage teeth 750, ¶0022, ¶0036, ¶0068-¶0069) such that the rotor, and thereby the hub and the plurality of blades, are free to rotate (when the hub-rotates in the forward direction the hub and blades 240 are free to rotate since the anti-reversal device is not engaged); and adapted to engage one of the annular arranged teeth when the latch is in a non-pivoted position (i.e. in the non-pivoted position illustrated in Fig 5 the latch 770 engages one of the teeth 750 as seen in Figs 9-11) for blocking rotation of the rotor in a second rotational direction (i.e. for blocking rotation of the rotor in the reverse direction, ¶0067), which is opposite the first rotational direction (the reverse direction is opposite to the forward direction), such that the hub, and thereby the plurality of blades, are prevented from rotating (when the hub-rotates in the reverse direction the hub and blades 240 are prevented from rotating since the anti-reversal device is engaged). Han US 2006/0284500 is silent regarding the limitations: each latch having: a first end pivotally mounted inside the hub-plate; and a second end, wherein the latch is pivotable by swinging the second end in a radially outward direction; and an engagement hook provided at the first end of each latch and adapted to engage one of the annular arranged teeth when the latch is in a non-pivoted position for blocking rotation. The prior art of WO 2017/107051 which is directed to an anti-reversing mechanism for rotary devices (Line 1 & 11-12) like Han US 2006/0284500, is noted. PNG media_image1.png 492 856 media_image1.png Greyscale Annotated Figure 2 of WO 2017/107051 (Attached Figure A) However, WO 2017/107051 does disclose the limitations: an anti-reversal device (the anti-reversal device is defined by the sum of its parts), the anti-reversal device comprising: an annular hub-plate (see Annotated Figure 2 of WO 2017/107051 (Attached Figure A) above); and an annular arrangement of a first number of teeth (annular arrangement of a first number of teeth = teeth of ratchet 5 annularly arranged about the center as shown in Fig 2; first number =3) provided on a stationary part (stationary part = lock disc 7 fixed to housing 8, Fig 1, Line 213-215) and concentric with the hub-plate (Attached Figure A); wherein the hub-plate comprises a second number of latches (as understood from Figs 1-3 & Attached Figure A element 4 of the hub-plate has six latches 6; second number = 6), each latch having: a first end (Attached Figure A) pivotally mounted inside the hub-plate (as understood from Figs 1-3 & Attached Figure A the identified first end is pivotally mounted via element 13); and a second end (Attached Figure A), wherein the latch is pivotable by swinging the second end in a radially outward direction (Line 217-223, Attached Figure A – as described in the passage the identified second end swings radially out due to centrifugal force) and does not engage the annular arranged teeth if the device is rotated in a predetermined first rotational direction (Line 217-223; first rotational direction = forward direction) such that the rotor is free to rotate (Line 217-223); and an engagement hook (Attached Figure A) provided at the first end of each latch (Attached Figure A) and adapted to engage one of the annular arranged teeth when the latch is in a non-pivoted position (i.e. position shown in Attached Figure A) for blocking rotation of the rotor in a second rotational direction (Attached Figure A, Line 223-227; second rotational direction = reverse direction), which is opposite the first rotational direction (the reverse direction is opposite to the forward direction) such that the rotor is prevented from rotating (Line 223-227). Hence it would have been obvious, to one of ordinary skill in the art before the effective filing date of the claimed invention, to replace the anti-reversal device of Han US 2006/0284500 with the anti-reversal device of WO 2017/107051 in order to provide the motor with an anti-reversal device having a simple structure that is easy to maintain (Line 45-57). Regarding Claim 2: wherein the second end of each of the latches is provided with a mass of material (see Attached Figure A of WO ‘051). Regarding Claim 3: wherein the latches are curved between the first end and the second end (see Attached Figure A of WO ‘051). Regarding Claim 4: It is within the general skill level to change the shape of the latches such that the curvature of the latches matches a circumferential position of the hub-plate in order to reduce the complexity of the anti-reverse rotation device taught by the combination of prior art. Accordingly, the prior art makes obvious the limitations: “wherein the curvature of the latches matches a circumferential position in the hub-plate” as recited in claim 4. Regarding Claim 5: wherein the latches are each formed in one piece with uniform thickness in an axial direction of the ventilation fan (as understood from Attached Figure A & Figs 1-3 of WO ‘051 each of the latches 6 in Fig 1 has a uniform thickness in the axial direction; thus in the combination of art there would be a uniform thickness of the latches in an axial direction of the fan as claimed). Regarding Claim 6: wherein the latches are pivotably mounted for pivoting about an axis parallel to an axis of rotation of the hub-plate (as understood from Attached Figure A & Figs 1-3 of WO ‘051 the pivot axis about element 13 of WO ‘051 would extend parallel to the axis of rotation of the hub-plate in the combination of art). Regarding Claim 7: wherein the second number of latches is a plurality of latches (i.e. six latches), which are equally angularly spaced on the hub-plate (Line 200-204 of WO ‘051). Regarding Claim 10: wherein the latches are pivotably mounted and are exclusively pivotable due to rotation of the hub plate (given that the mechanism of WO ‘051 only causes pivoting (inward or outward) when the hub plate is rotated; put another way if the mechanism of WO ‘051 is stationary the latches 6 of WO ‘051 are not going to pivot, and the latches are only able to pivot (inward or outward) when the hub plate has been rotated in some manner (e.g. due to rotation of the hub plate)). Regarding Claim 11: Han US 2006/0284500 as modified by WO 2017/107051 discloses the claimed limitations except for: “wherein the first number of teeth provided in the annular arrangement is nine and the nine teeth form an open ring of separate teeth”. It would have been an obvious matter of design choice to --design the annular arrangement of the first number of teeth to be nine separate teeth that form an open ring--, since no stated problem is solved or unexpected results obtained in having the first number of teeth provided in the annular arrangement is nine and the nine teeth form an open ring of separate teeth versus the design taught by Han US 2006/0284500 as modified by WO 2017/107051. Applicant has not disclosed why it is important/critical that the first number of teeth provided in the annular arrangement is nine and the nine teeth form an open ring of separate teeth and has not demonstrated that this feature solves any stated problem or is for any particular purpose. Specifically, ¶0019 of the SPEC indicates that the arrangement of the teeth is chosen to ensure that the latch engages the teeth during operation of the device (e.g. like the pawl 6 of WO ‘051 which engages the teeth of ratchet 5 of WO ‘051 in the combination of Han US 2006/0284500 as modified by WO 2017/107051). Thus, when the annular arrangement of the first number of teeth is designed to be an open ring of nine separate teeth the pawl 6 of WO ‘051 which engages the teeth of ratchet 5 of WO ‘051 in the combination of Han US 2006/0284500 as modified by WO 2017/107051 will also meet Applicant’s disclosed functional limitation of ensuring that the latch engages the teeth during operation of the device. Regarding Claim 13: wherein the ventilation fan is an axial flow fan (given the arrangement of the plurality of blades 240 of the fan of Han, the fan is capable of moving air axially and thus is an axial flow fan as claimed). Regarding Claim 14: wherein the electric motor is a permanent magnet electric motor (Han - ¶0044 – element 731 of the motor is a permanent magnet). Regarding Claim 15: Han US 2006/0284500 as modified by WO 2017/107051 discloses the claimed invention except for "wherein the motor of the fan is mounted predominantly horizontally". It would have been obvious to one having ordinary skill in the art at the time the invention was made to have such a rearrangement of how the motor of the fan is mounted as a matter of choice which a person of ordinary skill in the art would have found obvious absent persuasive evidence that the particular horizontal arrangement of the motor of the fan is significant. In re Japikse, 181 F.2d 1019, 86 USPQ 70 (CCPA 1950); In re Kuhle, 526 F. 2d 553, 188 USPQ 7 (CCPA 1975). MPEP 2144.04(VI)(C). Regarding Claim 16: Han US 2006/0284500 discloses the limitations: An anti-reversal device (the anti-reversal device is defined by the sum of its parts) for a ventilation fan (the ventilation fan is defined by the sum of its parts) comprising an electric motor (= 500,600,710, Fig 3) driving a rotor (730, Fig 3), the rotor 730 having a hub 732 and mounted on a drive shaft of the motor (i.e. mounted on drive shaft 720 via bearing 733, ¶0044, Fig 3), and wherein the anti-reversal device is concentrically mounted between the motor and the rotor (i.e. concentrically mounted between the part of casing 500 which elements 750 extend from & rotor 730 as shown in Fig 3), the anti-reversal device comprising: an annular hub-plate (the annular hub-plate is defined by the sum of its parts and includes elements 760,780,781, ¶0048,¶0051, Figs 3-4) concentrically mounted on the hub (as understood from ¶0051 & Figs 3-4 the hub plate is fixed to hub 732); and an annular arrangement of a first number of teeth (= annular arrangement of stationary blocks 750 shown in Fig 4, ¶0045-¶0047; first number = eight, Fig 4) provided on a stationary part of the motor (stationary part of the motor = the part of casing 500 which has elements 750 extending therefrom as seen in Figs 3-4) and concentric with the hub-plate (as understood from Figs 3-4 the teeth 750 are concentric with element 781 of the annular hub-plate); wherein the hub-plate comprises a second number of latches (= latch 770 in Fig 5; second number = one, ¶0048-¶0053): wherein the latch is pivotable and does not engage the annular arranged teeth if the hub is rotated in a predetermined first rotational direction (when the hub 732 is rotated in the forward direction, the latch 770 does not engage teeth 750, ¶0022, ¶0036, ¶0068-¶0069) such that the rotor, and thereby the hub and the plurality of blades, are free to rotate (when the hub-rotates in the forward direction the hub and blades 240 are free to rotate since the anti-reversal device is not engaged); and adapted to engage one of the annular arranged teeth when the latch is in a non-pivoted position (i.e. in the non-pivoted position illustrated in Fig 5 the latch 770 engages one of the teeth 750 as seen in Figs 9-11) for blocking rotation of the rotor in a second rotational direction (i.e. for blocking rotation of the rotor in the reverse direction, ¶0067), which is opposite the first rotational direction (the reverse direction is opposite to the forward direction), such that the hub, and thereby the plurality of blades, are prevented from rotating (when the hub-rotates in the reverse direction the hub and blades 240 are prevented from rotating since the anti-reversal device is engaged). Han US 2006/0284500 is silent regarding the limitations: each latch having: a first end pivotally mounted inside the hub-plate; and a second end, wherein the latch is pivotable by swinging the second end in a radially outward direction; and an engagement hook provided at the first end of each latch and adapted to engage one of the annular arranged teeth when the latch is in a non-pivoted position for blocking rotation. The prior art of WO 2017/107051 which is directed to an anti-reversing mechanism for rotary devices (Line 1 & 11-12) like Han US 2006/0284500, is noted. However, WO 2017/107051 does disclose the limitations: an anti-reversal device (the anti-reversal device is defined by the sum of its parts), the anti-reversal device comprising: an annular hub-plate (see Annotated Figure 2 of WO 2017/107051 (Attached Figure A) above); and an annular arrangement of a first number of teeth (annular arrangement of a first number of teeth = teeth of ratchet 5 annularly arranged about the center as shown in Fig 2; first number =3) provided on a stationary part (stationary part = lock disc 7 fixed to housing 8, Fig 1, Line 213-215) and concentric with the hub-plate (Attached Figure A); wherein the hub-plate comprises a second number of latches (as understood from Figs 1-3 & Attached Figure A element 4 of the hub-plate has six latches 6; second number = 6), each latch having: a first end (Attached Figure A) pivotally mounted inside the hub-plate (as understood from Figs 1-3 & Attached Figure A the identified first end is pivotally mounted via element 13); and a second end (Attached Figure A), wherein the latch is pivotable by swinging the second end in a radially outward direction (Line 217-223, Attached Figure A – as described in the passage the identified second end swings radially out due to centrifugal force) and does not engage the annular arranged teeth if the device is rotated in a predetermined first rotational direction (Line 217-223; first rotational direction = forward direction) such that the rotor is free to rotate (Line 217-223); and an engagement hook (Attached Figure A) provided at the first end of each latch (Attached Figure A) and adapted to engage one of the annular arranged teeth when the latch is in a non-pivoted position (i.e. position shown in Attached Figure A) for blocking rotation of the rotor in a second rotational direction (Attached Figure A, Line 223-227; second rotational direction = reverse direction), which is opposite the first rotational direction (the reverse direction is opposite to the forward direction) such that the rotor is prevented from rotating (Line 223-227). Hence it would have been obvious, to one of ordinary skill in the art before the effective filing date of the claimed invention, to replace the anti-reversal device of Han US 2006/0284500 with the anti-reversal device of WO 2017/107051 in order to provide the motor with an anti-reversal device having a simple structure that is easy to maintain (Line 45-57). Claim(s) 12 and 17 is/are rejected under 35 U.S.C. 103 as being unpatentable over Han US 2006/0284500 in view of WO 2017/107051 as applied to claims 1 and 16 above, and further in view of Tsao US 2013/0220760. Regarding Claim 12: Han US 2006/0284500 as modified by WO 2017/107051 discloses in the above mentioned Figures and Specifications the limitations set forth in claim 1. Additionally, WO 2017/107051 discloses the limitations: wherein N1 is the first number of teeth (N1 = 3, the first number of teeth is 3) and N2 is the second number of latches (N2 = 6, the second number of latches is 6). Han US 2006/0284500 as modified by WO 2017/107051 does not disclose the limitations: N1 is higher than N2, and N1/N2 is a non-integer number. PNG media_image2.png 602 976 media_image2.png Greyscale Annotated Figure 1 of Tsao US 2013/0220760 (Attached Figure F) However Tsao US 2013/0220760, which is directed to a ratchet braking structure, does disclose the limitations: an annular arrangement of a first number of teeth (i.e. annular arrangement of 17 teeth on ratchet wheel 91; first number = 17); a second number of latches (i.e. two latches 92; second number = 2); wherein N1 is the first number of teeth (N1 is 17, N1 is an odd number, ¶0004-¶0005) and N2 is the second number of latches (N2 is 2, N2 is an even number, ¶0004-¶0005), N1 is higher than N2 (it is, 17 is higher than 2), and N1/N2 is a non-integer number (it is, 17/2 is 8.5 which is not a whole number (i.e. 8.5 is a non-integer number)). Hence it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention, to modify the anti-rotation device of Han US 2006/0284500 as modified by WO 2017/107051 with the teaching of providing an odd number of ratchet teeth (e.g. 17 teeth) & an even number of latches (e.g. 2 latches) as taught (¶0004-¶0005) by Tsao US 2013/0220760 in order to ensure operational safety of the device the ratchet braking structure is applied to (title, ¶0001-¶0005). Regarding Claim 17: Han US 2006/0284500 as modified by WO 2017/107051 discloses in the above mentioned Figures and Specifications the limitations set forth in claim 16. Additionally, WO 2017/107051 discloses the limitations: wherein the second number of latches are provided in an annular concentric configuration (as seen in Attached Figure A the second number of latches 6 are arranged annularly as claimed), wherein N1 is the first number of teeth (N1 = 3, the first number of teeth is 3) and N2 is the second number of latches (N2 = 6, the second number of latches is 6). Han US 2006/0284500 as modified by WO 2017/107051 does not disclose the limitations: N1 is higher than N2, and N1/N2 is a non-integer number. However Tsao US 2013/0220760, which is directed to a ratchet braking structure, does disclose the limitations: an annular arrangement of a first number of teeth (i.e. annular arrangement of 17 teeth on ratchet wheel 91; first number = 17); a second number of latches (i.e. two latches 92; second number = 2); wherein N1 is the first number of teeth (N1 is 17, N1 is an odd number, ¶0004-¶0005) and N2 is the second number of latches (N2 is 2, N2 is an even number, ¶0004-¶0005), N1 is higher than N2 (it is, 17 is higher than 2), and N1/N2 is a non-integer number (it is, 17/2 is 8.5 which is not a whole number (i.e. 8.5 is a non-integer number)). Hence it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention, to modify the anti-rotation device of Han US 2006/0284500 as modified by WO 2017/107051 with the teaching of providing an odd number of ratchet teeth (e.g. 17 teeth) & an even number of latches (e.g. 2 latches) as taught (¶0004-¶0005) by Tsao US 2013/0220760 in order to ensure operational safety of the device the ratchet braking structure is applied to (title, ¶0001-¶0005). Allowable Subject Matter Claims 8-9 are objected to as being dependent upon a rejected base claim, but would be allowable if rewritten in independent form including all of the limitations of the base claim and any intervening claims. Regarding claim 8: The prior art of record either alone or in combination does not teach or suggest the device recited in claim 8 including “wherein the hub-plate is provided with a plurality of inner volumes such that the second number of latches are accommodated in the inner volumes and wherein the latches pivot”. As disclosed by Applicant, “at higher speeds the latches 7 are forced outwards, whereby they are freed from the teeth 8 but held in place by the outer perimeter of the inner volume 51 of the hub-plate 5 so that the latches 7 will be ready to engage again once the rotation stops. This arrangement is advantageous a sit ensures that any speed above idling the anti-reversal unit is 100% free.” It is the Examiner’s position that modification of the available prior art in the claimed manner is neither contemplated nor foreseeable without the benefit of the disclosure of the instant invention. Accordingly, claim 9 is allowable based on the allowability of claim 8. Examiner's Note: The Examiner respectfully requests of the Applicants in preparing responses, to fully consider the entirety of the references as potentially teaching all or part of the claimed invention. It is noted, REFERENCES ARE RELEVANT AS PRIOR ART FOR ALL THEY CONTAIN. “The use of patents as references is not limited to what the patentees describe as their own inventions or to the problems with which they are concerned. They are part of the literature of the art, relevant for all they contain.” In re Heck, 699 F.2d 1331, 1332-33, 216 USPQ 1038, 1039 (Fed. Cir. 1983) (quoting In re Lemelson, 397 F.2d 1006, 1009, 158 USPQ 275, 277 (CCPA 1968)). A reference may be relied upon for all that it would have reasonably suggested to one having ordinary skill the art, including nonpreferred embodiments (see MPEP § 2123). Additionally the origin of the drawing is immaterial. For instance, drawings in a design patent can anticipate or make obvious the claimed invention, as can drawings in utility patents. When the reference is a utility patent, it does not matter that the feature shown is unintended or unexplained in the specification. The drawings must be evaluated for what they reasonably disclose and suggest to one of ordinary skill in the art. In re Aslanian, 590 F.2d 911, 200 USPQ 500 (CCPA 1979). (See MPEP § 2125). The Examiner has cited particular locations in the reference(s) as applied to the claims above for the convenience of the Applicants. Although the specified citations are representative of the teachings of the art and are applied to the specific limitations within the individual claims, typically other passages and figures will apply as well. Furthermore: with respect to the prior art and the determination of obviousness, it has been held that Prior art is not limited just to the references being applied, but includes the understanding of one of ordinary skill in the art. The "mere existence of differences (i.e. a gap) between the prior art and an invention DOES NOT ESTABLISH the inventions nonobviousness." Dann v. Johnston, 425 U.S. 219, 230, 189 USPQ 257, 261 (1976). Rather, in determining obviousness the proper analysis is whether the claimed invention would have been obvious to one of ordinary skill in the art after consideration of all the facts. And factors other than the disclosures of the cited prior art may provide a basis for concluding that it would have been obvious to one of ordinary skill in the art to bridge the gap. (See MPEP § 2141). Response to Arguments Applicant’s arguments (Page 9 ¶4-Page 14 ¶1) with respect to claim(s) 1 & 16 have been considered but are moot because the new ground of rejection does not rely on any reference applied in the prior rejection of record for any teaching or matter specifically challenged in the argument. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to JOSEPH S HERRMANN whose telephone number is (571)270-3291. The examiner can normally be reached 8:00 AM - 5:00 PM EST. 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, ESSAMA OMGBA can be reached at 469-295-9278. 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. /JOSEPH S. HERRMANN/ Examiner, Art Unit 3746 /ESSAMA OMGBA/ Supervisory Patent Examiner, Art Unit 3746
Read full office action

Prosecution Timeline

Sep 22, 2023
Application Filed
Dec 07, 2024
Non-Final Rejection — §103
Mar 05, 2025
Examiner Interview Summary
Mar 05, 2025
Applicant Interview (Telephonic)
Mar 11, 2025
Response Filed
Jun 14, 2025
Final Rejection — §103
Aug 21, 2025
Response after Non-Final Action
Sep 16, 2025
Request for Continued Examination
Sep 22, 2025
Response after Non-Final Action
Nov 29, 2025
Non-Final Rejection — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12577959
AXIAL FAN
2y 5m to grant Granted Mar 17, 2026
Patent 12571393
VACUUM PUMPING SYSTEM HAVING AN OIL-LUBRICATED VACUUM PUMP
2y 5m to grant Granted Mar 10, 2026
Patent 12546311
PUMP-MOTOR UNIT COMPRISING A CENTRED STATOR
2y 5m to grant Granted Feb 10, 2026
Patent 12535068
DURABLE VALVES FOR DISPLACEMENT PUMPS
2y 5m to grant Granted Jan 27, 2026
Patent 12523230
INFLATABLE PUMP, INFLATABLE ASSEMBLY, AND INFLATABLE PRODUCT
2y 5m to grant Granted Jan 13, 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

3-4
Expected OA Rounds
63%
Grant Probability
99%
With Interview (+41.4%)
3y 2m
Median Time to Grant
High
PTA Risk
Based on 482 resolved cases by this examiner. Grant probability derived from career allow 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