Prosecution Insights
Last updated: September 17, 2026
Application No. 18/699,411

LIQUID SUPPLY DEVICE FOR SPRAYING EQUIPMENT

Final Rejection §103§112
Filed
Apr 08, 2024
Priority
Oct 15, 2021 — CN 202122492058.0 +1 more
Examiner
LEE, CHEE-CHONG
Art Unit
3752
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Qingdao Hanbo Plastic Technology Co. Ltd.
OA Round
2 (Final)
64%
Grant Probability
Moderate
3-4
OA Rounds
11m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 64% of resolved cases
64%
Career Allowance Rate
511 granted / 794 resolved
-5.6% vs TC avg
Strong +52% interview lift
Without
With
+52.4%
Interview Lift
resolved cases with interview
Typical timeline
3y 4m
Avg Prosecution
64 currently pending
Career history
863
Total Applications
across all art units

Statute-Specific Performance

§101
0.7%
-39.3% vs TC avg
§103
37.4%
-2.6% vs TC avg
§102
26.7%
-13.3% vs TC avg
§112
32.6%
-7.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 794 resolved cases

Office Action

§103 §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 . Response to Amendment The response filed on July 9, 2026 is acknowledged. One page of drawing was received on July 9, 2026. The drawing is acceptable to correct the obvious scrivener’s errors in the original disclosure. Election/Restrictions Applicant’s election without traverse of Species I in the reply filed on February 10, 2026 is acknowledged. Claim 16 is withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected Species, there being no allowable generic or linking claim. Election was made without traverse in the reply filed on February 10, 2026. Drawings 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 closure part in claim 18 (In the response filed on July 9, 2026, the Applicant clarifies that element 16, "closure 16" and "closure portion 16" is/are the closure part in claim 18. Examiner’s note: While there appears to be basis for these terms in the original specification nonetheless the meaning of every terms, especially terms now used to patentably define over the prior art, used in any of the claims should be apparent from the descriptive portion of the specification with clear disclosure as to its import. The use of a confusing variety of terms for the same thing or the use of same terms to refer a variety of different things should not be permitted); and a thickness of an arc-shaped portion of each of the plurality of spiral wedge elements near the cover is greater than a thickness of an arc-shaped portion of each of the plurality of spiral wedge elements away from the cover as amended in claim 1. No new matter should be entered. 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 The following is a quotation of 35 U.S.C. 112(f): (f) Element in Claim for a Combination. – An element in a claim for a combination may be expressed as a means or step for performing a specified function without the recital of structure, material, or acts in support thereof, and such claim shall be construed to cover the corresponding structure, material, or acts described in the specification and equivalents thereof. The following is a quotation of pre-AIA 35 U.S.C. 112, sixth paragraph: An element in a claim for a combination may be expressed as a means or step for performing a specified function without the recital of structure, material, or acts in support thereof, and such claim shall be construed to cover the corresponding structure, material, or acts described in the specification and equivalents thereof. The claims in this application are given their broadest reasonable interpretation using the plain meaning of the claim language in light of the specification as it would be understood by one of ordinary skill in the art. The broadest reasonable interpretation of a claim element (also commonly referred to as a claim limitation) is limited by the description in the specification when 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, is invoked. As explained in MPEP § 2181, subsection I, claim limitations that meet the following three-prong test will be interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph: (A) the claim limitation uses the term “means” or “step” or a term used as a substitute for “means” that is a generic placeholder (also called a nonce term or a non-structural term having no specific structural meaning) for performing the claimed function; (B) the term “means” or “step” or the generic placeholder is modified by functional language, typically, but not always linked by the transition word “for” (e.g., “means for”) or another linking word or phrase, such as “configured to” or “so that”; and (C) the term “means” or “step” or the generic placeholder is not modified by sufficient structure, material, or acts for performing the claimed function. Use of the word “means” (or “step”) in a claim with functional language creates a rebuttable presumption that the claim limitation is to be treated in accordance with 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph. The presumption that the claim limitation is interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, is rebutted when the claim limitation recites sufficient structure, material, or acts to entirely perform the recited function. Absence of the word “means” (or “step”) in a claim creates a rebuttable presumption that the claim limitation is not to be treated in accordance with 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph. The presumption that the claim limitation is not interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, is rebutted when the claim limitation recites function without reciting sufficient structure, material or acts to entirely perform the recited function. Claim limitations in this application that use the word “means” (or “step”) are being interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, except as otherwise indicated in an Office action. Conversely, claim limitations in this application that do not use the word “means” (or “step”) are not being interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, except as otherwise indicated in an Office action. This application includes one or more claim limitations that do not use the word “means,” but are nonetheless being interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, because the claim limitation(s) uses a generic placeholder that is coupled with functional language without reciting sufficient structure to perform the recited function and the generic placeholder is not preceded by a structural modifier. Such claim limitation(s) is/are: “spraying equipment” in line 1 of claim 11, where the “equipment” is the placeholder and “spraying” is the functional language; and “connection portion” in line 2 of claim 17, where the “portion” is the placeholder and “connection” is the functional language. Same interpretation applies to all pending claims. Because this/these claim limitation(s) is/are being interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, it/they is/are being interpreted to cover the corresponding structure described in the specification as performing the claimed function, and equivalents thereof. If applicant does not intend to have this/these limitation(s) interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph, applicant may: (1) amend the claim limitation(s) to avoid it/them being interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph (e.g., by reciting sufficient structure to perform the claimed function); or (2) present a sufficient showing that the claim limitation(s) recite(s) sufficient structure to perform the claimed function so as to avoid it/them being interpreted under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph. 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 11-15 and 17-20 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. Claim 11 recites “a thickness of an arc-shaped portion of each of the plurality of spiral wedge elements near the cover is greater than a thickness of an arc-shaped portion of each of the plurality of spiral wedge elements away from the cover” in lines 15-17 rendering the claim indefinite because the plurality of spiral wedge elements are elements of the cover 2, it is unclear how can the plurality of spiral wedge elements be measured nearer or closer to itself? Clarification is respectfully requested. 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) 11-15 and 17-20 is/are rejected under 35 U.S.C. 103 as being unpatentable over Gerson et al. (US11040360. Gerson hereinafter) in view of Farrar et al. (US 8245860. Farrar hereinafter). With respect to claim 11, Gerson discloses a liquid supply device (Figs. 1-12) for spraying equipment (spray gun. Not shown), comprising: a cover (200) having a fluid outlet (230), wherein the fluid outlet is configured to (capable of) connect the cover to the spraying equipment (via 240. Fig. 2); an inner liner (130) having a flange (outer rim) , wherein the inner liner collapses when fluid contained within the inner liner is drawn from the liquid supply device; and, a rigid outer cup (110, 120) having an open end (accommodating 130), wherein the cover extends over the open end, the inner liner is received in the rigid outer cup (Fig. 7), and the cover is adapted to both the rigid outer cup and the inner liner; wherein a plurality of spiral wedge elements (270) is uniformly arranged on an outer edge of the cover (Fig. 3); a plurality of spiral wedge grooves (in between 1630) is uniformly arranged on an upper edge of an inner wall of the rigid outer cup (Fig. 9A-C); the plurality of spiral wedge elements are adapted to the plurality of spiral wedge grooves in one-to-one correspondence (Col. 6, lines 14-16); and when each of the plurality of spiral wedge elements is screwed into a corresponding spiral wedge grooves, the cover is connected to the rigid outer cup. Gerson fails to disclose wherein a thickness of an arc-shaped portion of each of the plurality of spiral wedge elements near the cover is greater than a thickness of an arc-shaped portion of each of the plurality of spiral wedge elements away from the cover. However, Farrar teaches a cover (15. Fig. 1(a)), a rigid outer cup (3) having an open end (9), wherein a plurality of spiral wedge elements (19 and 25) is uniformly arranged on an outer edge of the cup; a plurality of spiral wedge grooves (in between 21) is uniformly arranged on a lower edge of an inner wall of the cover); the plurality of spiral wedge elements are adapted to the plurality of spiral wedge grooves in one-to-one correspondence; and when each of the plurality of spiral wedge elements is screwed into a corresponding spiral wedge grooves, the cover is connected to the rigid outer cup and wherein a thickness of an arc-shaped portion (at 25) of each of the plurality of spiral wedge elements near the cover is greater than a thickness of an arc-shaped portion (19) of each of the plurality of spiral wedge elements away from the cover. Therefore, it would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to combine the teaching of a wedge-shaped projection, as taught by Farrar, to Gerson’s thread connection, in order to allow for the removal of the collar from the container body (Col. 9, lines 16-23). As for the reversal of the spiral wedge elements and spiral wedge grooves on the cover and cup, it would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to reverse the spiral wedge elements and spiral wedge grooves on the cover and cup. It has been held that a mere reversal of the essential working parts of a device involves only routine skill in the art. In re Einstein, 8 USPQ 167. With respect to claim 12, Gerson’s liquid supply device modified by Farrar’s wedge-shaped projection, Gerson further discloses the liquid supply device for spraying equipment according to claim 11, wherein the plurality of spiral wedge elements comprises four spiral wedge elements are uniformly arranged on the cover (Fig. 12). With respect to claim 13, Gerson’s liquid supply device modified by Farrar’s wedge-shaped projection, Gerson further discloses the liquid supply device for spraying equipment according to claim 11, wherein each of the plurality of spiral wedge groove is formed by a unidirectional protrusion (of 1630. same configuration as the Applicant’s invention), and the unidirectional protrusion protrudes in the direction of (toward) a center of a circle of the open end of the rigid outer cup; and an upper surface of the unidirectional protrusion is located in the same plane as an upper surface of the upper edge of the inner wall of the rigid outer cup (See Fig. 9C with additional annotations below), and a lower surface of the unidirectional protrusion is a spiral surface, and the lower surface is oriented towards a bottom of the rigid outer cup (Fig. 9C). With respect to claim 14, Gerson’s liquid supply device modified by Farrar’s wedge-shaped projection, Gerson further discloses the liquid supply device for spraying equipment according to claim 11, wherein the plurality of spiral wedge elements and plurality of spiral wedge grooves are only in the form of one part of one turn of corresponding external and internal threads, respectively (Same configuration as the Applicant’s invention). With respect to claim 15, Gerson’s liquid supply device modified by Farrar’s wedge-shaped projection, Gerson further discloses the liquid supply device for spraying equipment according to claim 11, wherein a corresponding place of the inner wall of the rigid outer cup below the plurality of spiral wedge grooves is provided with a placing ring surface (pointed by “1620” in Fig. 9A), and the placing ring surface is used for placing the flange of the inner liner (Fig. 10B). With respect to claim 17, Gerson’s liquid supply device modified by Farrar’s wedge-shaped projection, Gerson further discloses the liquid supply device for spraying equipment according to claim 11, wherein the fluid outlet is provided with a connection portion (230), the connection portion is adapted to a connection method of the spraying equipment. With respect to claim 18, Gerson’s liquid supply device modified by Farrar’s wedge-shaped projection, Gerson further discloses the liquid supply device for spraying equipment according to claim 11, wherein a closure part (275) matching with an opening of the inner liner is provided at a corresponding place of the cover (Fig. 10B). With respect to claim 19, Gerson and Farrar disclose the liquid supply device for spraying equipment according to claim 11, wherein a stop sheet (pointed by “1620” in Fig. 9A) is provided at a tail (lower) end of the spiral wedge groove; and a cross section of the spiral wedge element is a trapezoidal shape or a triangular shape (Fig. 9C). Gerson and Farrar fail to specifically disclose the length of the spiral wedge element is between 1-2 cm. It would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to make the length of the spiral wedge element is between 1-2 cm, since the claimed values are merely an optimum or workable range. It has been held that where the general conditions of a claim are disclosed in the prior art, discovering the optimum or workable ranges involves only routine skill in the art. In re Aller, 105 USPQ 233. With respect to claim 20, Gerson’s liquid supply device modified by Farrar’s wedge-shaped projection, Gerson further discloses the liquid supply device for spraying equipment according to claim 12, wherein the four spiral wedge elements are identical (Fig. 12). PNG media_image1.png 318 914 media_image1.png Greyscale Response to Arguments Applicant’s arguments with respect to claim(s) 1-15 and 17-20 have been considered but are moot because the new ground of rejection does not rely on the combination of references applied in the prior rejection of record for any teaching or matter specifically challenged in the argument. See revised drawing objections and 35 U.S.C. 112(b) rejections elaborated above. 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 CHEE-CHONG LEE whose telephone number is (571)270-1916. The examiner can normally be reached Monday-Friday 8am -5pm. 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, Arthur O. Hall can be reached at (571)270-1814. 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. /CHEE-CHONG LEE/ Primary Examiner, Art Unit 3752 July 20, 2026
Read full office action

Prosecution Timeline

Apr 08, 2024
Application Filed
Apr 09, 2026
Non-Final Rejection mailed — §103, §112
Jul 09, 2026
Response Filed
Jul 22, 2026
Final Rejection mailed — §103, §112
Sep 02, 2026
Applicant Interview (Telephonic)
Sep 02, 2026
Examiner Interview Summary

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Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

3-4
Expected OA Rounds
64%
Grant Probability
99%
With Interview (+52.4%)
3y 4m (~11m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 794 resolved cases by this examiner. Grant probability derived from career allowance rate.

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