Prosecution Insights
Last updated: September 17, 2026
Application No. 18/938,585

ABLATION SYSTEM WITH FORCE CONTROL

Non-Final OA §102§103§DOUBLEPATENT
Filed
Nov 06, 2024
Priority
Oct 11, 2016 — provisional 62/406,748 +4 more
Examiner
ROANE, AARON F
Art Unit
Tech Center
Assignee
Acutus Medical Inc.
OA Round
1 (Non-Final)
73%
Grant Probability
Favorable
1-2
OA Rounds
1y 11m
Est. Remaining
83%
With Interview

Examiner Intelligence

Grants 73% — above average
73%
Career Allowance Rate
652 granted / 890 resolved
+13.3% vs TC avg
Moderate +10% lift
Without
With
+9.7%
Interview Lift
resolved cases with interview
Typical timeline
3y 9m
Avg Prosecution
43 currently pending
Career history
919
Total Applications
across all art units

Statute-Specific Performance

§101
1.5%
-38.5% vs TC avg
§103
46.3%
+6.3% vs TC avg
§102
24.6%
-15.4% vs TC avg
§112
18.1%
-21.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 890 resolved cases

Office Action

§102 §103 §DOUBLEPATENT
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 . Double Patenting The nonstatutory double patenting rejection is based on a judicially created doctrine grounded in public policy (a policy reflected in the statute) so as to prevent the unjustified or improper timewise extension of the “right to exclude” granted by a patent and to prevent possible harassment by multiple assignees. A nonstatutory double patenting rejection is appropriate where the conflicting claims are not identical, but at least one examined application claim is not patentably distinct from the reference claim(s) because the examined application claim is either anticipated by, or would have been obvious over, the reference claim(s). See, e.g., In re Berg, 140 F.3d 1428, 46 USPQ2d 1226 (Fed. Cir. 1998); In re Goodman, 11 F.3d 1046, 29 USPQ2d 2010 (Fed. Cir. 1993); In re Longi, 759 F.2d 887, 225 USPQ 645 (Fed. Cir. 1985); In re Van Ornum, 686 F.2d 937, 214 USPQ 761 (CCPA 1982); In re Vogel, 422 F.2d 438, 164 USPQ 619 (CCPA 1970); In re Thorington, 418 F.2d 528, 163 USPQ 644 (CCPA 1969). A timely filed terminal disclaimer in compliance with 37 CFR 1.321(c) or 1.321(d) may be used to overcome an actual or provisional rejection based on nonstatutory double patenting provided the reference application or patent either is shown to be commonly owned with the examined application, or claims an invention made as a result of activities undertaken within the scope of a joint research agreement. See MPEP § 717.02 for applications subject to examination under the first inventor to file provisions of the AIA as explained in MPEP § 2159. See MPEP § 2146 et seq. for applications not subject to examination under the first inventor to file provisions of the AIA . A terminal disclaimer must be signed in compliance with 37 CFR 1.321(b). The filing of a terminal disclaimer by itself is not a complete reply to a nonstatutory double patenting (NSDP) rejection. A complete reply requires that the terminal disclaimer be accompanied by a reply requesting reconsideration of the prior Office action. Even where the NSDP rejection is provisional the reply must be complete. See MPEP § 804, subsection I.B.1. For a reply to a non-final Office action, see 37 CFR 1.111(a). For a reply to final Office action, see 37 CFR 1.113(c). A request for reconsideration while not provided for in 37 CFR 1.113(c) may be filed after final for consideration. See MPEP §§ 706.07(e) and 714.13. The USPTO Internet website contains terminal disclaimer forms which may be used. Please visit www.uspto.gov/patent/patents-forms. The actual filing date of the application in which the form is filed determines what form (e.g., PTO/SB/25, PTO/SB/26, PTO/AIA /25, or PTO/AIA /26) should be used. A web-based eTerminal Disclaimer may be filled out completely online using web-screens. An eTerminal Disclaimer that meets all requirements is auto-processed and approved immediately upon submission. For more information about eTerminal Disclaimers, refer to www.uspto.gov/patents/apply/applying-online/eterminal-disclaimer. Claims 2-21 are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-18 of U.S. Patent No. 11,701,158. Although the claims at issue are not identical, they are not patentably distinct from each other because they encompass the same essential invention. Claim Rejections - 35 USC § 102 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 the appropriate paragraphs of 35 U.S.C. 102 that form the basis for the rejections under this section made in this Office action: A person shall be entitled to a patent unless – (a)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale, or otherwise available to the public before the effective filing date of the claimed invention. Claims 2-3 is rejected under 35 U.S.C. 102(a)(1) as being anticipated by Nau, Jr. (U.S. Patent Application Publication 2010/0179539). Regarding claim 2, Nau, Jr. disclose a system comprising: an ablation catheter comprising: a shaft ("shaft" 12, see [0020] and figure 1 for example) including: a proximal end ("proximal end" 16, see [0020] and figure 1 for example), a distal portion( extending from the middle of the shaft 14 to the distal end where "jaw members" 110 and 120 are disposed, see [0020] and figure 1 for example); and a distal end (the distal end is where "jaw members" 110 and 120 are disposed, see [0020] and figure 1 for example); an ablation element ("one or both of the seal plates" 118 and/or 128, see [0018] and figures 3A and 3B for example) configured to deliver energy to tissue; and a force maintenance assembly comprising a force maintenance element configured to control and/or assess contact force between the ablation element and cardiac tissue, wherein the force maintenance element comprises a piston ( comprising "plunger" 202 and "drive assembly" 130, see [0027], [0029] and figures 1, 3A, and 3B for example), the piston extending from the shaft distal end; it should be further noted the force maintenance assembly is configured to control a fluid flow to the hydraulic piston to adjust, maintain, and/or control a hydraulic pressure that the hydraulic piston exerts on and/or against the tissue (consider the "drive assembly" 130 portion of the force maintenance assembly, see [0029] and figures 1, 3A, and 3B), and a console configured to operably attach to the ablation catheter and comprising: an energy delivery assembly (comprising "source of electrosurgical energy, e.g., generator" 200, see [0024] for example) configured to provide energy to the ablation element. Regarding claim 3, Nau, Jr. disclose the claimed invention, see figures 3A-3B. 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 2, 4-18, and 20-21 are rejected under 35 U.S.C. 103 as being unpatentable over Barley et al. (U.S. Patent Application Publication 2012/0165669) in view of Willis (U.S. Patent Application Publication 2007/0049821) in view of Belson et al. (U.S. Patent Application Publication 2013/0066304). Regarding claim 2, Barley et al. disclose an ablation system comprising: an ablation catheter comprising: a shaft (the shaft of "elongated body" 3, see [0043] and figures 1-11 for example) including a proximal end (the proximal end of the elongate body 3 located adjacent "controller unit" 111, see figure 11), a distal portion (comprising the distal half of running from the distal end 1 to the middle of elongate member 3, see figure 11 for example) and a distal end ("distal end region" 1, see [0043] and figure 11 for example); an ablation element (wherein "ablation element" is merely interpreted as an element or electrode since there is no positive recitation of type of ablation energy like in claims 96 and 97 and claim 1 only recites "configured to deliver energy to tissue," so "tip electrode" 14 serves as the "ablation element" or element since it delivers at the very lease mechanical energy in the form of force times distance (i.e., contact energy), see "ablation electrode" 20 in [0048] and figures 1-2 for example) configured to deliver energy to tissue; and a force maintenance assembly comprising: a force maintenance element ( comprising a piston or piston like element "transmission element" 5, see [0048] and figures 1-11) configured to control and/or assess contact force between the ablation element and tissue, wherein the force maintenance element comprises a piston ( comprising a piston or piston like element "transmission element" 5, see [0048] and figures 1-11), the piston extending from the shaft distal end; and a console ("controller unit" 111, see [0067] and figure 11) configured to operably attach to the ablation catheter. However, Barley et al. fail to explicitly recite 1) the console further comprises "an energy delivery assembly configured to provide energy to the ablation element," and 2) "the force maintenance assembly is configured to control a fluid flow to the hydraulic piston to adjust, maintain, and/or control a hydraulic pressure that the hydraulic piston exerts on and/or against the tissue." First, like Barley et al., Willis discloses an RF ablation catheter that also incorporates an ultrasound transducer and teaches explicitly providing the system and device with a RF generator 112 that is connected to the distal most electrode 134 in order to provide a known workable manner of providing the distal electrode tip with ablative energy, see [0039], [0042] and figure 1 for example. Second, like Barley et al., Belson et al. disclose 1) an elongate RF ablation device, 2) with force sensing built into the tip, and 3) with linearly moving tip and teach providing the tip with a hydraulic piston (see figures 15A and 15B) and a pneumatic pressure line/lumen 178 in order to provide the tip 1) with hydraulic force sensing capabilities (see [0146]) and 2) hydraulic linear tip moving capabilities (see [0113] and figures 15A and 15B) in a known and workable manner. Therefore the controllable pressure delivery of hydraulic fluid in "pressure line" 178 meets or makes obvious "the force maintenance assembly is configured to control a fluid flow to the hydraulic piston to adjust, maintain, and/or control a hydraulic pressure that the hydraulic piston exerts on and/or against the tissue". Therefore at the time of the invention it would have been obvious to one of ordinary skill in the art to modify the invention of Barley et al., as taught by Willis, to provide the console (of Barley et al.) with a RF generator that is connected to the distal most electrode in order to provide a known workable manner of providing the distal electrode tip with ablative energy, and as further taught by Belson et al., to provide the tip with a hydraulic piston and a pneumatic pressure line/lumen in order to provide the tip 1) with hydraulic force sensing capabilities hydraulic linear tip moving capabilities in a known and workable manner. Regarding claim 4, Barley et al. disclose the claimed invention, a hydraulic fluid ("fluid," [0044] and figures 1, and 5-7 for example), wherein the console is configured to deliver the hydraulic fluid into the piston (see [0020]-[0028], [0044]-[0045], [0066]- [0069] wherein it is disclosed there is a programmed controller that performs all of the operational functions which includes the flow of fluid into or towards the piston). Regarding claims 5-6, Barley et al. disclose the claimed invention, see [0044] and figure 1. Regarding claims 7-9, Barley et al. disclose the claimed invention, wherein the force maintenance module comprises ("compressive collar" 50, "spring element" 60, or "compressive elements" 70 and the ultrasound transducers shown in the various embodiments shown in figures 5-7 - along with any backend elements/portions in 111 ). Regarding claim 10, Barley et al. disclose the claimed invention, see figures 3A-3B. Regarding claim 11, Barley et al. disclose the claimed invention, wherein the recitation of the electrode being a mapping electrode as opposed to just an electrode is a recitation of 1) intended use, 2) language directed to how the device/element is intended to be employed and/or 3) a functional limitation. A recitation of intended use of the claimed invention must be evaluated to determine whether the recited purpose or intended use results in a structural difference ( or, in the case of process claims, manipulative difference) between the claimed invention and the prior art. If so, the recitation serves to limit the claim. However, if a prior art structure is capable of performing the intended use as recited in the preamble, then it meets the claim. A recitation with respect to the manner in which an apparatus is intended to be employed does not impose any structural limitation upon the claimed apparatus which differentiates it from a prior art reference disclosing the structural limitations of the claim. In re Pearson, 494 F.2d 1399, 181 USPQ 641 (CCPA 1974); In re Yanush, 477 F.2d 958, 177 USPQ 705 (CCPA 1973); In re Finsterwalder, 436 F.2d 1028, 168 USPQ 530 (CCPA 1971); In re Casey, 370 F.2d 576, 152 USPQ 235 (CCPA 1967); In re Otto, 312 F.2d 937, 136 USPQ 458 (CCPA 1963); Ex parte Masham, 2 USPQ2d 1647 (BdPatApp & Inter 1987). It is well established that a recitation with respect to the manner in which an apparatus is intended to be employed, 1.e., a functional limitation, does not impose any structural limitation upon the claimed apparatus which differentiates it from a prior art reference disclosing the structural limitations of the claim. In re Pearson, 494 F.2d 1399, 181 USPQ 641 (CCPA 1974); In re Casey, 370 F.2d 576, 152 USPQ 235 (CCPA 1967); In re Otto, 312 F.2d 937, 136 USPQ 458 (CCPA 1963). Where the prior art reference is inherently capable of performing the function described in a functional limitation, such functional limitation does not define the claimed apparatus over such prior art reference, regardless of whether the prior art reference explicitly discusses such capacity for performing the recited function. In re Ludtke, 441 F.2d 660, 169 USPQ 563 (CCPA 1971). In addition, where there is reason to believe that such functional limitation may be an inherent characteristic of the prior art reference, Applicant is required to prove that the subject matter shown in the prior art reference does not possess the characteristic relied upon. In re Spada, 911 F.2d 705, 15 USPQ2d 1655 (Fed. Cir. 1990); In re King, 801 F.2d 1324, 1327, 231 USPQ 136, 138 (Fed. Cir. 1986); In re Ludtke, 441 F.2d at 664, 169 USPQ at 566 (CCPA 1971). Regarding claims 12-13, Barley et al. disclose the claimed invention wherein the electrode 20 is described as a "thin conducting layer supported by the transmission element" 5, see [0047] and figures 1 and 2. Now given that figure 5 clearly shows the electrode tip which forms a spherical cavity engages the "transmission element" 5 that has a matching or mating spherical shape and they therefore the cavity of the electrode tip "rotatably engages" the spherical member of the "transmission element" 5. Additionally, the examiner interprets "articulate," 'articulating," and their cognates to be synonymous with "bend, curve" and their cognates. Barley et al. disclose an articulating tip electrode in [0059]-[0060] and figure 8. Regarding claim 14, Barley et al. further disclose the ablation catheter comprises a contact sensor (comprising "ultrasound transducer," see [0050]-[0051]) configured to produce a signal representative of the amount of contact between the ablation element and tissue. Regarding claim 15-16, Barley et al. disclose the claimed invention, see [0018], [0050]-[0051] for example. Regarding claim 17, Barley et al. disclose the claimed invention wherein the recitation of claim 17 is a recitation of 1) intended use, 2) language directed to how the device/element is intended to be employed and/or 3) a functional limitation. A recitation of intended use of the claimed invention must be evaluated to determine whether the recited purpose or intended use results in a structural difference ( or, in the case of process claims, manipulative difference) between the claimed invention and the prior art. If so, the recitation serves to limit the claim. However, if a prior art structure is capable of performing the intended use as recited in the preamble, then it meets the claim. A recitation with respect to the manner in which an apparatus is intended to be employed does not impose any structural limitation upon the claimed apparatus which differentiates it from a prior art reference disclosing the structural limitations of the claim. In re Pearson, 494 F.2d 1399, 181 USPQ 641 (CCPA 1974); In re Yanush, 477 F.2d 958, 177 USPQ 705 (CCPA 1973); In re Finsterwalder, 436 F.2d 1028, 168 USPQ 530 (CCPA 1971); In re Casey, 370 F.2d 576, 152 USPQ 235 (CCPA 1967); In re Otto, 312 F.2d 937, 136 USPQ 458 (CCPA 1963); Ex parte Masham, 2 USPQ2d 1647 (BdPatApp & Inter 1987). It is well established that a recitation with respect to the manner in which an apparatus is intended to be employed, 1.e., a functional limitation, does not impose any structural limitation upon the claimed apparatus which differentiates it from a prior art reference disclosing the structural limitations of the claim. In re Pearson, 494 F.2d 1399, 181 USPQ 641 (CCPA 1974); In re Casey, 370 F.2d 576, 152 USPQ 235 (CCPA 1967); In re Otto, 312 F.2d 937, 136 USPQ 458 (CCPA 1963). Where the prior art reference is inherently capable of performing the function described in a functional limitation, such functional limitation does not define the claimed apparatus over such prior art reference, regardless of whether the prior art reference explicitly discusses such capacity for performing the recited function. In re Ludtke, 441 F.2d 660, 169 USPQ 563 (CCPA 1971). In addition, where there is reason to believe that such functional limitation may be an inherent characteristic of the prior art reference, Applicant is required to prove that the subject matter shown in the prior art reference does not possess the characteristic relied upon. In re Spada, 911 F.2d 705, 15 USPQ2d 1655 (Fed. Cir. 1990); In re King, 801 F.2d 1324, 1327, 231 USPQ 136, 138 (Fed. Cir. 1986); In re Ludtke, 441 F.2d at 664, 169 USPQ at 566 (CCPA 1971). It should be noted the "time resolved imaging" disclosed in [0013] can meet the claimed intended use/functional recitation. Regarding claim 18, Barley et al. further disclose the force maintenance !assembly is configured to compress up to a maximum compression distance, and wherein the maximum compression distance comprises a distance between 0.1mm and 10mm, see [0060] where it is disclosed "[i]t is expected that the collar deformation would be at most 0.5 mm off-axis (at the maximum expected contact pressure of .about.SO g)." It should be noted that the maximum compression distance claimed by Applicant does not preclude off-axis deformations. Regarding claims 20-21, Barley et al. further disclose the force maintenance I assembly further comprises at least one displacement sensor (comprising "ultrasound transducer," see [0050]-[0051]) configured to produce a signal correlating to a travel distance of the force maintenance assembly. Additionally, the system along with the sensor (comprising "ultrasound transducer," see [0050]-[0051]), is capable of determining when the travel distance is equal to a maximum compression distance based on the sensor signal. Claim 19 is rejected under 35 U.S.C. 102((a)(l)) as anticipated by Nau, Jr. (U.S. Patent Application Publication 2010/0179539) or, in the alternative, under 35 U.S.C. 103 as obvious over Nau, Jr. (U.S. Patent Application Publication 2010/0179539) in view of Cahill et al. (U.S. Patent Application Publication 2014/0236208). Regarding claim 19, Nau, Jr. further clearly disclose a locking element (see element Z in the reproduced figure 1 of Nau, Jr. below) configured to lock the force maintenance assembly to prevent linear and/or angular movement of the ablation element with respect to the shaft. Nau, Jr. discloses "movable handle 40 of handle assembly 30 is ultimately connected to drive assembly 130, which together mechanically cooperate to impart movement of hydraulic mechanism 200. Movement of hydraulic mechanism 200 causes jaw members 110 and 120 to move from an open position, wherein the jaw members 110 and 120 are disposed in spaced relation relative to one another, to a clamping or closed position, wherein the jaw members 110 and 120 cooperate to grasp tissue therebetween," see [0022] and figure 1. But, Nau, Jr. fails to explicitly recite that element Z is a safety or locking mechanism that unless element Z is actuated the movable handle 40 cannot be actuated, and therefore in turn the ablation element cannot translate or rotate with respect to the shaft. However, it is extremely well known in the medical device with actuating handle arts to provide an element like element Z with locking and safety functions in order to provide safer operation. As an example, Cahill et al. is a medical device like Nau, Jr. having handle like Nau, Jr.'s with one stationary handle, one movable handle and an element similar to element Z of Nau, Jr. and teach providing the handle having a stationary handle member and a movable handle member ("trigger" 1541, see [0342], [0344] and figure 1) with a "safety" 1591 (much like Nau, Jr.'s element Z) so that the handle/trigger may be selectively actuated in order to provide safety from accidental actuation, see [0344 ]-[0345]. Therefore at the time of the invention it would have been obvious to one of ordinary skill in the art to modify the invention of Nau, Jr., as taught by Cahill et al., to provide the function of locking the handle/trigger actuation in order to provide additional safety. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to AARON F ROANE whose telephone number is (571)272-4771. The examiner can normally be reached generally Mon-Fri 8am-9pm. 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, Niketa Patel can be reached at (571) 272-4156. 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. /AARON F ROANE/Primary Examiner, Art Unit 3792
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Prosecution Timeline

Nov 06, 2024
Application Filed
Sep 04, 2026
Non-Final Rejection mailed — §102, §103, §DOUBLEPATENT (current)

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Prosecution Projections

1-2
Expected OA Rounds
73%
Grant Probability
83%
With Interview (+9.7%)
3y 9m (~1y 11m remaining)
Median Time to Grant
Low
PTA Risk
Based on 890 resolved cases by this examiner. Grant probability derived from career allowance rate.

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