Prosecution Insights
Last updated: October 02, 2026
Application No. 17/922,703

CELL DETECTION DEVICE AND CELL DETECTION METHOD

Final Rejection §103
Filed
Nov 01, 2022
Priority
May 14, 2020 — JP 2020-085387 +1 more
Examiner
HENKEL, DANIELLE B
Art Unit
1799
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Hitachi Ltd.
OA Round
2 (Final)
56%
Grant Probability
Moderate
3-4
OA Rounds
0m
Est. Remaining
80%
With Interview

Examiner Intelligence

Grants 56% of resolved cases
56%
Career Allowance Rate
366 granted / 651 resolved
-8.8% vs TC avg
Strong +24% interview lift
Without
With
+23.6%
Interview Lift
resolved cases with interview
Typical timeline
3y 8m
Avg Prosecution
29 currently pending
Career history
676
Total Applications
across all art units

Statute-Specific Performance

§101
0.4%
-39.6% vs TC avg
§103
55.4%
+15.4% vs TC avg
§102
16.4%
-23.6% vs TC avg
§112
17.4%
-22.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 651 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 . Response to Amendment The amendment filed 7/6/26 has been entered and fully considered. Claims 1-23 remain pending, of which claims 1-10 were previously withdrawn. The previous 35 USC 112f interpretation has been withdrawn due to the amendments. 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. 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. 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. Claim(s) 11-23 is/are rejected under 35 U.S.C. 103 as being unpatentable over MIYASHITA (US 2016/0348146) in view of ISHIMARU (US 2021/0207072) (newly cited) as supplied by applicant on the IDS dated 11/1/22. Regarding claim 11, 15, 22-23 MIYASHITA discloses a microorganism measuring method (cell detection method) comprising: dispensing a liquid/reagent (adding medium) from a reagent tube (medium container) to a collection container 30 (container) holding sample microorganisms (holding cells to be detected) on a filter surface 30a (filter inherently has pore diameter smaller than size of cells being tested in order to hold the cells); taking an aliquot of the reaction liquid 110a in the collection container 30 and dispensing it into a measurement tube 50 (collecting the medium from the container)(0071); and measuring the luminescence intensity based on the single photon method (detecting light from) from the tube 50 having a luminescence reagent 110d mixed with the reaction liquid 110a (medium moves from starting container to cell container to collection container) (0082-104, Fig 1). MIYASHITA discloses the above method but does not explicitly disclose the medium added to the container holding cells to culture cells held in the container nor the collecting step in which the medium contains a secretion from cultured cells. However, ISHIMARU discloses a cell detection method comprising adding a liquid medium and specimen (cells to be detected) to prepare a culture medium to a culture portion of a container 200 for culturing the microbes in the container (adding part of prepared culture medium to culture container to culture cells held in culture container) and dripping the culture medium into the lower container (collecting the culture medium in collection container), the medium containing ATP produced by the microbes (containing a secretion from the cultured cells) and detecting light from a luminescent reagent mixed with the collected culture medium (0012, 0058-73). It would have been obvious to one of ordinary skill in the art to modify the method of MIYASHITA to include the steps of adding a prepared culture medium to a container with cells to culture the cells held in the culture container and collecting the culture medium containing a secretion form the cultured cells as taught by ISHIMARU because it allows for the detection of cell proliferation over time during a cell culturing process while decreasing the possibility of contaminating the culture medium which produces false positives (0009-12). Regarding claim 12, MIYASHITA discloses repeating the above steps a plurality of times (Fig 3A, 0157, 0161), and compares the results (0162-191, Fig 6). Regarding claim 13, MIYASHITA discloses using a different measurement tube 50 (collection container) each time when repeating measurements (0108, 0113). Regarding claim 14, MIYASHITA discloses the method is performed with a reagent dispenser 4 including nozzle and pump (syringe and pressure pump) configured to add or collect medium (0077- 0081) and a photon counting unit 52 (configured to detect light) including a photomultiplier tube (luminescence measurement device) (0082). Regarding claim 16, MIYASHITA discloses the nozzle (syringe) is configured to discharge a predetermined amount of liquid (0077-78) but does not explicitly disclose the volume is 0.5-5 times a value obtained by multiplying an area and thickness of the filter. However, it would have been obvious to one of ordinary skill in the art at the time the invention was filed to choose the predetermined amount to be within the claimed range in order to provide the right amount of liquid to adequately flush the filter as desired by MIYASHITA (0090-93) without using any more than necessary of the expensive reagents. Additionally, it would have been obvious to one having ordinary skill in the art at the time the invention was made to choose the volume of liquid to use based on the filter area and thickness, since 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. MPEP 2144.05. Regarding claim 17, MIYASHITA discloses the luminescent reagent is a luciferase-luciferin reagent as the ATP luminescence reagent (0101), such that luminescence is caused by ATP in the reaction liquid and the ATP luminescence reagent reacting on each other (0102). Regarding claim 18, MIYASHITA discloses the reagent dispenser includes a pressure pump to make the nozzle suck or discharge liquid (switching) that connects the culture container with a collection container (0077), but does not explicitly disclose a switching valve configured to connect to an arbitrary collection container among a plurality. However, ISHIMARU discloses using valves 24 to control introduction into each chamber (0154). It would have been obvious to one of ordinary skill in the art to modify the dispenser system of MIYASHITA to include valves as taught by ISHIMARU for controlling which chamber input fluids are directed to because it allows for automating a filling procedure to reduce the risk of human error and increase productivity of the system. Regarding claim 19, MIYASHITA does not explicitly disclose the nozzle (syringe) adds the medium substantially parallel to the filter surface. However, it would have been obvious to one of ordinary skill in the art at the time the invention was filed to change the orientation of the nozzle of MIYASHITA to be parallel in order to allow for a more even spread of the culture microorganisms over the surface of the filter. Additionally, it would have been obvious to one having ordinary skill in the art at the time the invention was filed to change the orientation of the nozzle, since it has been held that rearranging parts of an invention involved only routine skill in the art. MPEP 2144.04. Regarding claim 20, MIYASHITA discloses the collection container filter 30a has a suction head 32a (adapter) covering a surface of the filter that has a pathway for fluid flow (adapter with capillary) and filtration controller to control the pump (valve) (0071-75, Fig 1). Regarding claim 21, MIYASHITA discloses controlling the amount of aliquot is achieved by predetermined control by a controller (0081) but does not explicitly disclose the nozzle adding an entire amount of culture medium from a reagent tube (medium container). However, it would have been obvious to one of ordinary skill in the art at the time the invention was filed to add the entirety of the reagent tube contents as the predetermined aliquot if the reagents were supplied in said tubes in the volume necessary for the detection method being used. Additionally, It would have been obvious to one having ordinary skill in the art at the time the invention was made to have the reagent dispenser add an entire amount of medium from a medium container, since 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. MPEP 2144.05. Response to Arguments Applicant’s arguments with respect to claim(s) 11-23 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 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 DANIELLE B HENKEL whose telephone number is (571)270-5505. The examiner can normally be reached M-Th 11-7 EST, Alt. Fridays. 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 Marcheschi can be reached at 571-272-1374. 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. /DANIELLE B HENKEL/Examiner, Art Unit 1799 /William H. Beisner/Primary Examiner, Art Unit 1799
Read full office action

Prosecution Timeline

Nov 01, 2022
Application Filed
Apr 08, 2026
Non-Final Rejection mailed — §103
Jul 06, 2026
Response Filed
Sep 23, 2026
Final Rejection mailed — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12735664
CELL CULTURE DEVICE
4y 5m to grant Granted Sep 15, 2026
Patent 12698479
AUTOMATED SYSTEM FOR PRODUCING INDUCED PLURIPOTENT STEM CELLS OR DIFFERENTIATED CELLS
3y 1m to grant Granted Aug 04, 2026
Patent 12680066
CASSETTE ASSEMBLY
4y 9m to grant Granted Jul 14, 2026
Patent 12674129
MINIATURIZED CENTRIFUGAL BIOREACTOR AND ROTOR SYSTEM
4y 7m to grant Granted Jul 07, 2026
Patent 12662655
Device for Distributing a Flow
5y 1m to grant Granted Jun 23, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

Strategy Recommendation AI-generated — please review before filing

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

Prosecution Projections

3-4
Expected OA Rounds
56%
Grant Probability
80%
With Interview (+23.6%)
3y 8m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 651 resolved cases by this examiner. Grant probability derived from career allowance rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month