Prosecution Insights
Last updated: May 29, 2026
Application No. 18/697,753

APPARATUS FOR TRANSPORTING SWEAT DROPLETS

Non-Final OA §103
Filed
Apr 02, 2024
Priority
Oct 04, 2021 — EU 21200652.2 +1 more
Examiner
BALAJI, KAVYA SHOBANA
Art Unit
3791
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Koninklijke Philips N V
OA Round
1 (Non-Final)
13%
Grant Probability
At Risk
1-2
OA Rounds
1y 6m
Est. Remaining
75%
With Interview

Examiner Intelligence

Grants only 13% of cases
13%
Career Allowance Rate
3 granted / 23 resolved
-57.0% vs TC avg
Strong +62% interview lift
Without
With
+61.7%
Interview Lift
resolved cases with interview
Typical timeline
3y 8m
Avg Prosecution
31 currently pending
Career history
74
Total Applications
across all art units

Statute-Specific Performance

§101
4.4%
-35.6% vs TC avg
§103
79.7%
+39.7% vs TC avg
§102
13.8%
-26.2% vs TC avg
§112
1.5%
-38.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 23 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 . 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. Claim(s) 1, 3-14 and 16 is/are rejected under 35 U.S.C. 103 as being unpatentable over Samarasekera et al. (US 20240382963 A1) in view of Pollack (US 20150212043 A1). Regarding claim 1, Samarasekera discloses an apparatus for transporting sweat droplets (title, [0048]: “sweat”), the apparatus comprising: a plurality of chambers ([0023]: “a plurality of multi-outlet dispensers”) defined in a substrate ([0023]: "(b) a bottom substrate, the bottom substrate having a plurality of droplet operations electrodes, wherein the top substrate and bottom substrate are space apart from the bottom substrate forming a droplet operations gap therebetween"), each of the chambers having an inlet for receiving sweat from the skin ([0173]: “can be left near the outlet 132-2 of dual-sided dispenser 130, which is the gap height h3-portion of dual-sided dispenser 130”, Fig 39A inlet at element 132-1 leading into the chamber defined by h1), and an outlet arranged such that a sweat droplet forms and protrudes therefrom following filling of the chamber with sweat ([173]: ““prime” droplet 554 at outlet 132-2..”, Fig 39A outlet at 132-2); and an electrowetting arrangement ([0049]: “the manipulation of droplets by a droplet actuator may be electrode mediated, e.g., electrowetting mediated”) comprising: a plurality of electrodes (Fig 39 elements 113 and 114) , each electrode being electrically chargeable and dischargeable ([0047]: “affecting a change in the electrical state of the one or more electrodes which, in the presence of a droplet, results in a droplet operation. Activation of an electrode can be accomplished using alternating current (AC) or direct current (DC)”), wherein the electrowetting arrangement comprises first, second, and third limbs of electrodes (Fig 32 elements 118-1, 118-2, 118-3, [0166]: “dual-sided dispenser 130… dual-sided dispenser 130 is shown and described hereinbelow with reference to FIG. 39A through FIG. 39F.”, wherein the element 130 in fig 32 corresponds to the element 130 disclosed in fig 38) configured to permit transport of the sweat droplets to or towards a central region from the first group in the case of the first limb, to or towards the central region from the second group in the case of the second limb, and to or towards the central region from the third group in the case of the third limb by charging and discharging of the electrodes ([0076]: " can include an electrode arrangement 112 that can include, but is not limited to, any arrangements (e.g., lines, paths, arrays) of droplet operations electrodes 114 (i.e., electrowetting electrodes) that can be used to fluidly connect any arrangements of one or more reservoirs 116, one or more localized surface plasmon resonance (LSPR) sensors 120, and one or more multi-sided or multi-outlet dispensers 130.", Fig 32 element 112); and a conductive trace arrangement arranged to electrically connect electrodes of the first, second, and third limbs to each other (Fig 32, [0049]: “a conductive material (e.g., an epoxy, such as MASTER BOND™ Polymer System EP79, available from Master Bond, Inc., Hackensack, NJ) provides the electrical connection between electrodes on one substrate and electrical paths on the other substrates, e.g., a ground electrode on a top substrate may be coupled to an electrical path on a bottom substrate by such a conductive material” wherein the limbs are connected via conductive paths along electrodes), wherein the plurality of electrodes comprises a plurality of sets of electrodes (Fig 32 element 112 consisting of the electrode squares along 118-1, 118-2, and 118-3), each set comprising electrodes from the first, second and third limbs which are connected to each other (Fig 32 elements 118-1, 118-2, and 118-3), and wherein a first conductive trace included in the conductive trace arrangement is configured to connect one of the electrodes of the first limb to one of the electrodes of the second limb (Fig 32 electrodes along line 304, see arrows in Fig 24, [0049]: “a conductive material… provides the electrical connection between electrodes on one substrate and electrical paths on the other substrates”), and a second conductive trace included in the conductive trace arrangement is configured to connect said one of the electrodes of the second limb to one of the electrodes of the third limb (Fig 32 connections along line 302, see arrows in Fig 20, [0049]), wherein at least one further conductive trace is included in the conductive trace arrangement and configured to connect electrodes within one of first, second, and third limbs to each other (Fig 32 connections along line 300, see arrows in Fig 10, [0049]). While Samarasekera discloses wherein the outlets are grouped around a central portion of the surface of the substrate to define at least first, second and third groups of chambers ([0078]: “On-cartridge reservoirs 116, for example, can be formed of particular arrangements of droplet operations electrodes 114, such as shown in FIG. 6 through FIG. 32 .” Fig 32 wherein the limbs are grouped around central portion 116-2), they fail to disclose wherein the outlets are radially grouped around a central portion. Pollack discloses an apparatus (100) for transporting sweat droplets (title, [0024]: “sweat”) wherein the outlets are radially grouped around a central portion of the surface of the substrate to define at least first, second and third groups of chambers (Fig 4, [0046]: “electrode arrangement 400 provides a radial architecture in which four reservoir electrodes 410 (e.g., reservoir electrodes 410A, 410B, 410C, and 410D) are arranged substantially equal distance from a 4.times.4 array of outlet electrodes 118.”), As Samarasekera discloses multiple arrangements ([0076]: “an electrode arrangement 112 that can include, but is not limited to, any arrangements (e.g., lines, paths, arrays) of droplet operations electrodes 114 (i.e., electrowetting electrodes) that can be used to fluidly connect any arrangements of one or more reservoirs 116”), it would have been obvious to a person of ordinary skill in the art prior to the effective filing date to substitute the known grouping disclosed by Samarasekera with the known radial grouping disclosed by Pollack for the predictable result of guiding a sample towards a central region. Regarding claim 3, Samarasekera further discloses wherein the first limb comprises at least one series of first electrodes ([0076]: “arrangements (e.g., lines, paths, arrays) of droplet operations electrodes 114 (i.e., electrowetting electrodes) that can be used to fluidly connect any arrangements of one or more reservoirs 116”), each first electrode of the at least one series being configured to release and/or transport one of said sweat droplets protruding from a respective outlet (114) in the first group ([0060]: “, for example, a line of multiple (e.g., three) dispenser electrodes, an arrangement of droplets operations electrodes leading away from one end of the line of dispenser electrodes to provide an first outlet, and an arrangement of droplets operations electrodes leading away from the other end of the line of dispenser electrodes to provide a second outlet”). Regarding claim 4, Samarasekera discloses wherein the first limb comprises at least one further series of first electrodes (Fig 2B left versus right electrodes) configured to receive sweat droplets from each series of the at least one series of first electrodes (Figs 3A to 3B), and transport said sweat droplets away from the at least one series of first electrodes (Fig 3A to 3B). Regarding claim 5, Samarasekera discloses wherein the first limb comprises an additional series of first electrodes (Fig 6), and wherein the first limb comprises a plurality of said further series of first electrodes (Fig 6), the additional series of first electrodes being configured to receive sweat droplets from each further series of the plurality of further series of first electrodes (Figs 7-8), and transport said sweat droplets away from the plurality of further series of first electrodes (Figs 7-8). Regarding claim 6, Samarasekera discloses wherein the second limb comprises at least one series of second electrodes (Fig 2A left and right side, wherein the structure is repeated), each second electrode of the at least one series being configured to release and/or transport one of said sweat droplets protruding from a respective outlet in the second group (Figs 3A to 3B). Regarding claim 7, Samarasekera discloses wherein the second limb comprises at least one further series of second electrodes configured to receive sweat droplets from each series of the at least one series of second electrodes (Fig 6), and transport said sweat droplets away from the at least one series of second electrodes (Figs 7-9). Regarding claim 8, Samarasekera discloses wherein the second limb comprises an additional series of second electrodes (Fig 6), and wherein the second limb comprises a plurality of said further series of second electrodes (Fig 6), the additional series of second electrodes being configured to receive sweat droplets from each further series of the plurality of further series of second electrodes, and transport said sweat droplets away from the plurality of further series of second electrodes (Figs 7-9, second branch). Regarding claim 9, Samarasekera discloses wherein the third limb comprises at least one series of third electrodes (Fig 6), each third electrode of the at least one series being configured to release and/or transport one of said sweat droplets protruding from a respective outlet in the third group (Figs 7-9) Regarding claim 10, Samarasekera discloses wherein the third limb comprises at least one further series of third electrodes (Fig 6) configured to receive sweat droplets from each series of the at least one series of third electrodes (Fig 6 third branch)), and transport said sweat droplets away from the at least one series of third electrodes (Figs 7-9); optionally wherein the third limb (138) comprises an additional series of third electrodes, and wherein the third limb comprises a plurality of said further series of third electrodes, the additional series of third electrodes being configured to receive sweat droplets from each further series of the plurality of further series of third electrodes, and transport said sweat droplets away from the plurality of further series of third electrodes Regarding claim117, Samarasekera discloses wherein the at least one series of first electrodes comprises a plurality of series of first electrodes (Fig 7), each of the plurality of series of first electrodes intersecting with one further series of said at least one further series of first electrodes at different positions relative to each other along said one further series of first electrodes (fig 7 connections among the lines of electrodes); and/or wherein the at least one series of second electrodes comprises a plurality of series of second electrodes, each of the plurality of series of second electrodes intersecting with one further series of said at least one further series of second electrodes at different positions relative to each other along said one further series of second electrodes (Fig 7 connections along second row of electrodes); and/or wherein the at least one series of third electrodes comprises a plurality of series of third electrodes, each of the plurality of series of third electrodes intersecting with one further series of said at least one further series of third electrodes at different positions relative to each other along said one further series of third electrodes (Fig 7 connections along third lines of electrodes). Regarding claim 12, Samarasekera discloses at least one of a first sweat rate sensor, a second sweat rate sensor, and a third sweat rate sensor ([0080]: "LSPR sensors 120 can be used to determine the KD value, the kON value, and/or the kOFF value of the analyte sample with an immobilized ligand, wherein the KD value is a quantitative measurement of analyte affinity, the kON value indicates the kinetic ON-rate of the analyte sample, and the kOFF value indicates the kinetic OFF-rate of the analyte sample."), the first sweat rate sensor being arranged downstream of the outlets (114) of the first group and configured to determine a sweat rate from sweat droplets transported by the first limb (134), the second sweat rate sensor being arranged downstream of the outlets of the second group and configured to determine a sweat rate from sweat droplets transported by the second limb (136), and the third sweat rate sensor being arranged downstream of the outlets of the third group and configured to determine a sweat rate from sweat droplets transported by the third limb ([0140]: “moved via droplet operations to LSPR sensors 120 at the ends of flow paths 118-1, 118-2, 118-3.”) Regarding claim 13, Samarasekera discloses comprising a biosensor configured to determine a sweat analyte concentration ([0140]: “Any color change generated in the HRP-TMB reaction is amplified due to etching of the gold nano-urchins (AuNU) in the AuNU droplets 320, which is proportional to the concentration of the oxidized TMB colored product in the TMP droplets 322”), wherein the biosensor is arranged to receive sweat droplets transported thereto by the first, second and third limbs ([0140]: “moved via droplet operations to LSPR sensors 120 at the ends of flow paths 118-1, 118-2, 118-3.”); optionally wherein the apparatus further comprises a sweat collector downstream of the biosensor (Fig 32 element 116). Regarding claim 14, Pollack discloses an electric field generator for charging and discharging each of the electrodes of the electrowetting arrangement such as to transport each said sweat droplet ([0075]: “an electric field generating mechanism”). Regarding claim 16, Samarasekera disclosesthe first limb comprises at least one series of first electrodes (Fig 3A left electrode), each first electrode of the at least one series being configured to release and/or transport one of said sweat droplets protruding from a respective outlet in the first group (Figs 3A to 3B), the first limb comprising three of said series of first electrodes (Fig 6, first branch), the second limb comprises at least one series of second electrodes (Fig 3A left and right electrodes), each second electrode of the at least one series being configured to release and/or transport one of said sweat droplets protruding from a respective outlet in the second group (Figs 3A to 3B), the second limb comprising three of said series of second electrodes (Fig 6 second branch of electrodes), the third limb comprises at least one series of third electrodes (Fig 3A left and right electrodes), each third electrode of the at least one series being configured to release and/or transport one of said sweat droplets protruding from a respective outlet in the third group (Fig 3A to 3B), the third limb comprising three of said series of third electrodes (Fig 6 third branch), and two further conductive traces per limb connect the three series of electrodes within each limb to each other (Fig 6 connections between branches). Claim(s) 15 is/are rejected under 35 U.S.C. 103 as being unpatentable over Samarasekera in view of Pollack in further view of Wildhaber et al. (US 20220401012 A1). Regarding claim 15, Samarasekera in view of Pollack discloses the apparatus according to claim 1, but fails to discloses a wearable device comprising the apparatus according to any of claim 1;optionally wherein the wearable device comprises an attachment arrangement configured to enable attachment of the apparatus to a body part such that said inlets receive sweat from the skin of said body part. Wildhaber discloses an apparatus for transporting sweat droplets (title) including a wearable device comprising the apparatus ([0028]: “within an electronic device (e.g., in an adhesive patch or in a wearable device (e.g., a wrist-band, a head-band, a bandage, a sock, a glove, an arm-band, a waist-band, an ankle-band, and a knee-band).”); optionally wherein the wearable device comprises an attachment arrangement configured to enable attachment of the apparatus to a body part ([0041]: “the system includes a wearable housing (e.g., said housing non-invasively attachable and detachable from skin of the subject, e.g., via an adhesive surface)”) such that said inlets receive sweat from the skin of said body part ([0030]: “the collection and delivery module includes a collection surface, one or more collection structures, and/or one or more inlets”). It would have been obvious to a person of ordinary skill in the art prior to the effective filing date to modify the apparatus disclosed by Samarasekera in view of Pollack to include the wearable device disclosed by Wildhaber in order to improve ease of sweat collection (Wildhaber [0004]). Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Huff et al. (US 20180188230 A1) – discloses sweat collection apparatus Any inquiry concerning this communication or earlier communications from the examiner should be directed to KAVYA SHOBANA BALAJI whose telephone number is (703)756-5368. The examiner can normally be reached Monday - Friday 8:30 - 5:30 ET. 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, Jaqueline Cheng can be reached at 571-272-5596. 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. /KAVYA SHOBANA BALAJI/Examiner, Art Unit 3791 /DANIEL L CERIONI/Primary Examiner, Art Unit 3791
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Prosecution Timeline

Apr 02, 2024
Application Filed
Apr 06, 2026
Non-Final Rejection mailed — §103 (current)

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Prosecution Projections

1-2
Expected OA Rounds
13%
Grant Probability
75%
With Interview (+61.7%)
3y 8m (~1y 6m remaining)
Median Time to Grant
Low
PTA Risk
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