Prosecution Insights
Last updated: April 19, 2026
Application No. 18/290,448

Anesthesia ventilator device that dynamically monitors and regulates partial pressure of carbon dioxide

Non-Final OA §112
Filed
Nov 13, 2023
Examiner
STUART, COLIN W
Art Unit
3785
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Guangzhou Landswick Medical Technologies Ltd.
OA Round
1 (Non-Final)
58%
Grant Probability
Moderate
1-2
OA Rounds
3y 9m
To Grant
99%
With Interview

Examiner Intelligence

Grants 58% of resolved cases
58%
Career Allow Rate
499 granted / 857 resolved
-11.8% vs TC avg
Strong +55% interview lift
Without
With
+54.7%
Interview Lift
resolved cases with interview
Typical timeline
3y 9m
Avg Prosecution
43 currently pending
Career history
900
Total Applications
across all art units

Statute-Specific Performance

§101
5.1%
-34.9% vs TC avg
§103
37.7%
-2.3% vs TC avg
§102
15.3%
-24.7% vs TC avg
§112
31.5%
-8.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 857 resolved cases

Office Action

§112
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. This office action is in response to the claims filed 11/13/23. Claims 1-9 are pending in the instant application. Drawings The drawings are objected to as failing to comply with 37 CFR 1.84(p)(5) because they do not include the following reference sign(s) mentioned in the description: 4000 and 3001. 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. 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 Objections Claims 2 are objected to because of the following informalities: Regarding claim 2 , the language “an air source” (line 4) is objected to as claim 1 line 3 already sets forth the air source; Examiner suggests amending to read –the air source--. Regarding claim 2, the language “a mask” (line 5) is objected to as claim 1 line 4 already sets forth the mask; Examiner suggests amending to read –the mask--. Regarding claim 2, the language “an oxygen source” (line 7) is objected to as claim 1 line 2-3 already sets forth the oxygen source; Examiner suggests amending to read –the oxygen source--. Regarding claim 2, the language “an anesthetic gas source” (line 7) is objected to as claim 1 line 3 already sets forth the anesthetic gas source; Examiner suggests amending to read –the anesthetic gas source--. Regarding claim 2, the language “a carbon dioxide source” (line 7-8) is objected to as claim 1 line 3-4 already sets forth the carbon dioxide source; Examiner suggests amending to read –the carbon dioxide source--. Regarding claim 6, the language “an oxygen source” (line 2) is objected to as claim 1 line 2-3 already sets forth the oxygen source; Examiner suggests amending to read –the oxygen source--. Regarding claim 6, the language “an anesthetic gas source” (line 6-7) is objected to as claim 1 line 3 already sets forth the anesthetic gas source; Examiner suggests amending to read –the anesthetic gas source--. Regarding claim 6, the language “a carbon dioxide source” (line 11-12) is objected to as claim 1 line 3-4 already sets forth the carbon dioxide source; Examiner suggests amending to read –the carbon dioxide source--. Appropriate correction is required. Claim Interpretation The claim limitation “trumpet-shaped” (claim 1 line 48) is being interpreted in light of the disclosure, in particular Fig. 4 element 4082, to be outwardly expanding in diameter/height as shown. 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 appl icant regards as his invention. Claims 1-9 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 limitation s: “first power supply component for powering the coil electromagnets” (claim 1 line 14) , “second power supply component for powering the strip-shaped electromagnet” (claim 1 line 22-23), “third driving component for driving the rotation of the connecting rod” (claim 1 line 32-33), “fourth driving component for driving the rotation of the electrostatic adsorption net connecting rod” (claim 1 line 36-37), “fifth driving component for driving the rotation of the negative pressure fan” (claim 1 line 43-44), “sliding driving component for driving the sliding movement of the dust scraping sleeve” (claim 1 line 49) , “first driving component on the threaded shaft (3011) for driving the threaded shaft” (claim 9 line 33-34), and “second driving component provided on the partitions (3023) for driving a sliding movement of the partitions” (claim 9 line 54-55) invokes 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph. However, the written description fails to disclose the corresponding structure, material, or acts for performing the entire claimed function and to clearly link the structure, material, or acts to the function. FILLIN "Explain why there is insufficient disclosure of the corresponding structure, material, or acts for performing the entire claimed function or why there is no clear linkage between the structure, material, or acts and the function." \d "[ 2 ]" The specification and figures do not specify any corresponding structural elements for performing the claimed functions but merely restate 112f type claim language . Therefore, the claim is indefinite and is rejected under 35 U.S.C. 112(b) or pre-AIA 35 U.S.C. 112, second paragraph. Applicant may: (a) Amend the claim so that the claim limitation will no longer be interpreted as a limitation under 35 U.S.C. 112(f) or pre-AIA 35 U.S.C. 112, sixth paragraph; (b) Amend the written description of the specification such that it expressly recites what structure, material, or acts perform the entire claimed function, without introducing any new matter (35 U.S.C. 132(a)); or (c) Amend the written description of the specification such that it clearly links the structure, material, or acts disclosed therein to the function recited in the claim, without introducing any new matter (35 U.S.C. 132(a)). If applicant is of the opinion that the written description of the specification already implicitly or inherently discloses the corresponding structure, material, or acts and clearly links them to the function so that one of ordinary skill in the art would recognize what structure, material, or acts perform the claimed function, applicant should clarify the record by either: (a) Amending the written description of the specification such that it expressly recites the corresponding structure, material, or acts for performing the claimed function and clearly links or associates the structure, material, or acts to the claimed function, without introducing any new matter (35 U.S.C. 132(a)); or (b) Stating on the record what the corresponding structure, material, or acts, which are implicitly or inherently set forth in the written description of the specification, perform the claimed function. For more information, see 37 CFR 1.75(d) and MPEP §§ 608.01(o) and 2181. Claim 1 recites the limitation "the cleaning plate storage groove" in line 16. There is insufficient antecedent basis for this limitation in the claim. Regarding claim 1, the language “the cleaning plate” (line 18 and 20-21 ) is unclear as line 15 sets forth two such cleaning plates and it is not known if the language in lines 18 and 20-21 is referring to each of, or a particular one of, the two cleaning plates. Claim 1 recites the limitation "the flipping component mounting cavity" in line 24-25. There is insufficient antecedent basis for this limitation in the claim. Claim 1 recites the limitation "the negative pressure chamber" in line 41-42. There is insufficient antecedent basis for this limitation in the claim. Regarding claim 9, the language “the cleaning liquid storage tank” (line 47) is unclear as line 27 sets forth two such cleaning liquid storage tanks and it is not known if the language in lines 47 is referring to each of, or a particular one of, the two cleaning liquid storage tanks. Claims 2-8 are rejected based on dependency on a rejected claim. Allowable Subject Matter Claims 1-9 would be allowable if rewritten or amended to overcome the rejection(s) under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA), 2nd paragraph, set forth in this Office action. Reasons for Allowance When read in light of the limitations of the claimed anesthesia ventilator device that dynamically monitors and regulates partial pressure of carbon dioxide, the prior art does not disclose, either alone or suggest in combination, an anesthesia ventilator including an oxygen source, air source, anesthetic gas source, carbon dioxide source, at input end and connected to a mask at an output end of the ventilator main body; the air source equipped with a dust supplement assembly including a negative ion emitter fixedly connected inside the air source; a mounting fixed plate fixedly connected inside the air source; two symmetrically arranged coil electromagnets fixedly connected inside the mounting fixed plate and equipped with a power supply for powering the coil electromagnets; two symmetrically arranged cleaning plates slidingly connected inside a cleaning plate storage groove of the mounting fixed plate, wherein the cleaning plates are fixedly connected with several cleaning bristles; a reset spring fixedly connected between the cleaning plates and the cleaning plate storage grooves; a strip-shaped electromagnet fixedly connected at a bottom of the cleaning plates and having an opposite magnetic polarity to the coil electromagnets and equipped with a second power supply for powering the strip-shaped electromagnet; a flipping component installed in a flipping component mounting cavity of the mounting fixed plate and equipped with two symmetrically arranged guide grooves; a guide plate slidingly connected inside the guide grooves; a cylindrical mounting disk key-connected to a connecting rod rotatably connected to the guide plate and equipped with a third driving component for driving rotation of the connecting rod; an electrostatic adsorption net connecting rod rotatably connected to the cylindrical mounting disk and equipped with a fourth driving component for driving rotation of the electrostatic adsorption net connecting rod, one end away from the cylindrical mounting disk fixedly connected to an electrostatic adsorption net which is a positively charged net; a negative pressure fan rotatably connected inside a negative pressure chamber of the air source and equipped with a fifth driving component for driving rotation of the fan; a dust adsorption net fixedly connected inside the negative pressure chamber; a dust scraping sleeve slidingly connected to the dust adsorption net which is trumpet-shaped and equipped with a sliding driving component for driving the sliding movement of the dust scraping sleeve along the dust adsorption net; a sprayer fixedly connected to the air source; and a dust collection trough provided inside the negative pressure chamber as set forth in independent claim 1. The closest prior art references of record are: Raemer (5,320,093), Ryschka et al. (4,611,590), Psaros et al. (5,771,882), Bathe et al. (5,558,083), Yasue (4,903,693), Kiske et al. (5,049,317), Lampotang et al. (6,131,571), Block et al. (6,213,120), Dittmann et al. (2002/0014236), Zhang et al. (2009/0165785), Dahlstrom et al. (2010/0252046), Heesch (2012/0325208), Martin et al. (2014/0144439), and Jackson et al. (2022/0296845). While the above mentioned prior art references of record are related to the claimed invention, they do not disclose, either alone or suggest in combination, the limitations discussed above and set forth in independent claim 1. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to FILLIN "Examiner name" \* MERGEFORMAT COLIN W STUART whose telephone number is FILLIN "Phone number" \* MERGEFORMAT (571)270-7490 . The examiner can normally be reached FILLIN "Work Schedule?" \* MERGEFORMAT M-F: 9-5 . 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, FILLIN "SPE Name?" \* MERGEFORMAT Timothy Stanis can be reached at FILLIN "SPE Phone?" \* MERGEFORMAT 571-272-5139 . 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. /COLIN W STUART/ Primary Examiner, Art Unit 3785
Read full office action

Prosecution Timeline

Nov 13, 2023
Application Filed
Apr 01, 2026
Non-Final Rejection — §112 (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

1-2
Expected OA Rounds
58%
Grant Probability
99%
With Interview (+54.7%)
3y 9m
Median Time to Grant
Low
PTA Risk
Based on 857 resolved cases by this examiner. Grant probability derived from career allow rate.

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