Prosecution Insights
Last updated: August 16, 2026
Application No. 17/894,905

APPARATUS AND METHODS FOR CLEAN TRANSFER OF CENTRIFUGED MATERIALS

Non-Final OA §103
Filed
Aug 24, 2022
Priority
Aug 26, 2021 — provisional 63/237,416
Examiner
LIU, SHUYI S
Art Unit
1774
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Entegris Inc.
OA Round
3 (Non-Final)
73%
Grant Probability
Favorable
3-4
OA Rounds
0m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 73% — above average
73%
Career Allowance Rate
349 granted / 476 resolved
+8.3% vs TC avg
Strong +27% interview lift
Without
With
+26.6%
Interview Lift
resolved cases with interview
Typical timeline
3y 1m
Avg Prosecution
25 currently pending
Career history
524
Total Applications
across all art units

Statute-Specific Performance

§101
0.5%
-39.5% vs TC avg
§103
47.4%
+7.4% vs TC avg
§102
15.5%
-24.5% vs TC avg
§112
34.9%
-5.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 476 resolved cases

Office Action

§103
NON-FINAL 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and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114.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 27 April 2026 has been entered. Response to Arguments In light of claim amendments and Applicant’s remarks filed on 27 April 2026, the rejection of claims 1, 10, and 11 under 35 U.S.C. 102(a)(2) as being anticipated by McGillicuddy is withdrawn. The rejection under 35 U.S.C. 103 over Dodgson in view of McGillicuddy is maintained. Applicant argues that “Dodgson’s fluid pathway 112 opens to the interior of the product space ‘at or adjacent to the distal end’ (Dodgson, Paragraph [0276]), and the forth fluid path way 162 extends “from a point adjacent to the distal end of the product space” (Dodgson, Paragraph [0299]). These fluid pathways are not disposed at the end of the housing opposite the tapered region 106” (page 7, Remarks). However, Applicant’s argument is directed solely at fluid pathway 112 and does not address the other fluid passages cited in the Office Action, ports 150 and 164, which are part of fluid pathways 176 and 180, Fig. 9. As discussed in the rejections below, fluid pathways 176 and 180 as well as second fluid conduit 116 are located at the opposite, proximal end of the housing, not the distal conical end. Accordingly, Dodgson does disclose one or more fluid passages disposed at a second end of the tube opposite the conical portion and in fluid communication with the interior space. Priority Applicant’s claim for the benefit of a prior-filed application under 35 U.S.C. 119(e) or under 35 U.S.C. 120, 121, 365(c), or 386(c) is acknowledged. Drawings The drawings were received on 24 August 2022. These drawings are acceptable. 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. Claims 1-4, 6, 7, and 9-11 are rejected under 35 U.S.C. 103 as being unpatentable over Dodgson (U.S. Patent Application Pub. No. 2012/0029832) in view of McGillicuddy (U.S. Patent Application No. 2020/0360921). Regarding claim 1, Dodgson discloses a fluid transfer system comprising: a first fluid transfer container (cell product package 100; Fig. 9), the first fluid transfer container including: a tube (housing 102; Fig. 8 and 9), the tube including a conical portion (tapered region 106; Fig. 8 and 9) at one end, the tube defining an interior space (reservoir for waste solutions 170, reservoir for saline solutions 172, and product space 104, Fig. 9); one or more fluid passages (fluid pathway 176, further fluid pathway 180, and second fluid conduit 116, Fig. 9) disposed at a second end of the tube opposite the conical portion and in fluid communication with the interior space (reservoir for waste solutions 170, reservoir for saline solutions 172, and product space 104, Fig. 9), the one or more fluid passages configured to allow flow of fluid into or out of the interior space of the tube (fluid passages 176, 180, and 116 are located at the proximal end of housing 102, the proximal end being the end opposite the tapered/distal end, said passages pass through the cap or closure component 142 and opens to interior space 170, 172, and 104, Fig. 9); a connector (closure device 124; Fig. 8 and 9) disposed at an end of the conical portion, the connector configured to seal the end of the conical portion when the connector is joined only to the conical portion (a septum or valve that may be pierced or opened by a tool such as a tube, projecting plug portion, pipette tip, syringe, needle, or other form of fluid connection means, para. [0179]); and a pressure control mechanism configured to increase or decrease a pressure in the interior space of the tube (para. [0179]; closure device 124 can be a valve that may be opened by a tool such as a tube, projecting plug portion, pipette tip, syringe, needle or other form of fluid connection means), but does not disclose the connector is configured to fluidly connect the first fluid transfer container to a second fluid transfer container. McGillicuddy discloses analogous art related to two chambers connected and in fluid communication with each other, comprising a connector (female swabable Luer 48; Fig. 3C) disposed at an end of the conical portion of the first fluid transfer container, the connector configured to fluidly connect the first fluid transfer container to a second fluid transfer container (para. [0017]). It would have been obvious for one having ordinary skill in the art before the effective filing date of the claimed invention to modify the fluid transfer system of Dodgson by replacing the tool access closure with the direct container to container connector taught by McGillicuddy for the purpose of fluid transfer in a closed system (para. [0017], McGillicuddy). Regarding claim 2, the combination of Dodgson and McGillicuddy discloses wherein the connector (closure device 124, Fig. 9, Dodgson) includes at least part of a swabable valve (closure device 124 can be a valve that may be opened by a tool such as a syringe, and may be adapted to re-seal after opening, paras. [0179], [0193], [0291], Dodgson; female swabable Luer 48, Fig. 3C, McGillicuddy). Regarding claim 3, the combination of Dodgson and McGillicuddy discloses a cap (outer sterile closure 126; Fig. 8, Dodgson) configured to cover the connector (closure device 124; Fig. 8 and 9, Dodgson). While the combination of Dodgson and McGillicuddy does not disclose a cap that covers at least part of the conical portion, it has been held that changes in size, shape, or proportion are generally considered obvious to one of ordinary skill in the art absent a showing of criticality or unexpected results. See MPEP 2144.04. In Gardner v. TEC Syst., Inc., 725 F.2d 1338, 220 USPQ 777 (Fed. Cir. 1984), cert. denied, 469 U.S. 830, 225 USPQ 232 (1984), 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 re Dailey, 357 F.2d 669, 149 USPQ 47 (CCPA 1966) (The court held that the configuration of the claimed disposable plastic nursing container was a matter of choice which a person of ordinary skill in the art would have found obvious absent persuasive evidence that the particular configuration of the claimed container was significant.). It would have been obvious for one having ordinary skill in the art before the effective filing date of the claimed invention to have modified the cap of the combination of Dodgson and McGillicuddy to extend upward to cover not only the connector but also at least part of the conical portion. Such a modification constitutes a predicable variation motivated by routine design considerations of improving durability and sealing performance. KSR Int'l Co. v. Teleflex Inc., 550 U.S. 398, 417, 82 USPQ2d 1385, 1396 (2007). Regarding claim 4, the combination of Dodgson and McGillicuddy discloses wherein the cap is configured to be received in a centrifuge (para. [0180], [0206], Dodgson; para. [0014], McGillicuddy). Regarding claim 6, the combination of Dodgson and McGillicuddy discloses a media supply (reservoir 172; Fig. 9, Dodgson) and a fluid line (fluid conduit 160; Fig. 9, Dodgson) connected to the media supply and to one of the one or more fluid passages (fluid pathway 112; Fig. 9, Dodgson). Regarding claim 7, the combination of Dodgson and McGillicuddy discloses a vent (second fluid conduit 116; Fig. 9, the second fluid conduit may be adapted to allow flow of fluid into the product space to equalize wholly or partially changes of pressure; para. [0294], Dodgson) including a filter (breather means 120; Fig. 9, the second fluid pathway may be closed by a breather means such as a porous membrane or a valve; para. [0295], Dodgson), and a fluid line (product space 104; Fig. 9, Dodgson) connected to the vent and to one of the one or more fluid passages (fluid pathway 112; Fig. 9, Dodgson). Regarding claim 9, the combination of Dodgson and McGillicuddy discloses wherein the pressure control mechanism is a syringe (one or more fluid pathways may extend to ports and connect to syringes, ports accept standard fluid connections such as Luer fittings; para. [0193], Dodgson) including a syringe tube, a plunger (the syringe tube and plunger are considered inherently and necessarily present in the disclosed syringe of Dodgson), and a first luer connector (Luer fitting component, para. [0193], Dodgson; female swabable Luer 48, Fig. 3C, McGillicuddy), the first luer connector configured to be connected to a second fluid transfer container, the second fluid transfer container including a second luer connector (since Luer fittings have female and male components, it is inherent that one Luer component is located on the syringe while the other is on the second fluid transfer container 100, Dodgson; male Luer, para. [0017], McGillicuddy). Regarding claim 10, the combination of Dodgson and McGillicuddy discloses a second fluid transfer container including a second tube (patient administration means 182, Fig. 9, Dodgson; syringe 70, Fig. 3C, McGillicuddy), the second tube including a second conical portion at one end (Fig. 3C, McGillicuddy), the second tube defining a second internal space, and a second connector (male slip fit Luer 86; Fig. 3C, McGillicuddy), the connector configured to seal the end of the second conical portion when the connector is joined only to the second conical portion, wherein the connector of the first fluid transfer container and the second connector are configured to be joined to one another (para. [0109]; Fig. 3C, McGillicuddy), wherein the connector of the first fluid transfer container and the second connector are configured to be joined to one another (one or more fluid pathways may extend to ports and connect to syringes, ports accept standard fluid connections such as Luer fittings, para. [0193], since Luer fittings have female and male components, it is inherent that one Luer component is located on the syringe while the other is on the transfer container 100, Dodgson; also see para. [0017], McGillicuddy), Regarding claim 11, the combination of Dodgson and McGillicuddy discloses wherein the connector of the first fluid transfer container forms a first portion of a swabable valve and the second connector forms a second portion of the swabable valve (closure device 124 can be a valve that may be opened by a tool such as a syringe, and may be adapted to re-seal after opening; paras. [0179], [291], one or more fluid pathways may extend to ports and connect to syringes, ports accept standard fluid connections such as Luer fittings; para. [0193], since Luer fittings have female and male components, it is inherent that one Luer component is located on the syringe while the other is on the transfer container 100, Dodgson; also see para. [0017], the Luer to Luer connection can include a female swabable Luer at one of the syringe sand a male slip fit Luer at the other of the syringes, McGillicuddy). Claim 5 is rejected under 35 U.S.C. 103 as being unpatentable over Dodgson in view of McGillicuddy, as applied to claim 1 above, and further in view of Burton et al. (U.S. Patent Application Pub. No. 2005/0107757, hereinafter Burton). Regarding claim 5, the combination of Dodgson and McGillicuddy does not disclose a vacuum source and fluid line connected to the vacuum source and to one of the one or more fluid passages. Burton discloses analogous art related to a medical vacuum aspiration system, comprising vacuum source (electric vacuum pump or manual vacuum pump, para. [0056]) and fluid line (aspiration cylinder 300, Fig. 1) connected to the vacuum source and to one of the one or more fluid passages (fluid conduit 208, Fig. 3). It would have been obvious for one having ordinary skill in the art before the effective filing date of the claimed invention to have provided the system of the combination of Dodgson and McGillicuddy with the vacuum source as taught by Burton for the purpose of drawing fluid from a container (para. [0056], Burton). Claim 8 is rejected under 35 U.S.C. 103 as being unpatentable over Dodgson in view of McGillicuddy, as applied to claim 1 above, and further in view of EP 3342436 (Heinz). Regarding claim 8, the combination of Dodgson and McGillicuddy does not directly teach wherein the pressure control mechanism includes a plunger movably disposed within the tube, wherein: the one or more fluid passages are disposed on the plunger, the plunger includes a socket, and the pressure control mechanism further includes a plunger handle configured to be attached to the plunger at the socket, the plunger handle configured such that a space is formed between the plunger handle and the tube, the space configured to accommodate one or more fluid lines configured to be joined to the one or more fluid passages. Heinz discloses analogous art related to device for receiving and removing liquids, wherein the pressure control mechanism includes a plunger (piston 3; Fig. 2) movably disposed within the tube (cylinder 1; Fig. 2), wherein: the one or more fluid passages (hole-shaped recess 4; Fig. 5) are disposed on the plunger, the plunger includes a socket (central cone 18; Fig. 5), and the pressure control mechanism further includes a plunger handle (closure cap 6; Fig. 2) configured to be attached to the plunger at the socket (Fig. 5), the plunger handle (closure cap 6; Fig. 2) configured such that a space is formed between the plunger handle and the tube, the space configured to accommodate one or more fluid lines (tube 5; Fig. 2) configured to be joined to one or more fluid passages (hole-shaped recess 4; Fig. 5). It would have been obvious for one having ordinary skill in the art before the effective filing date of the claimed invention to have provided the system of the combination of Dodgson and McGillicuddy with the pressure control mechanism taught by Heinz for the purpose of exact removal of individual phases (page 2 line 3 of machine translation of Heinz). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to SHUYI S LIU whose telephone number is (571)272-0496. The examiner can normally be reached MON - FRI 9:30AM - 2:30PM 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, Claire Wang can be reached at 571-270-1051. 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. /Shuyi S. Liu/ Examiner, Art Unit 1774
Read full office action

Prosecution Timeline

Aug 24, 2022
Application Filed
Jul 10, 2025
Non-Final Rejection mailed — §103
Oct 09, 2025
Response Filed
Jan 27, 2026
Final Rejection mailed — §103
Apr 28, 2026
Request for Continued Examination
Apr 29, 2026
Response after Non-Final Action
Jun 30, 2026
Non-Final Rejection mailed — §103 (current)

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Prosecution Projections

3-4
Expected OA Rounds
73%
Grant Probability
99%
With Interview (+26.6%)
3y 1m (~0m remaining)
Median Time to Grant
High
PTA Risk
Based on 476 resolved cases by this examiner. Grant probability derived from career allowance rate.

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