Prosecution Insights
Last updated: October 23, 2026
Application No. 17/988,931

UNJACKETED FIBER OPTIC CABLE ASSEMBLY, AND CABLE ASSEMBLY INCLUDING CONNECTOR WITH TRAVEL LIMITED FERRULE

Non-Final OA §103
Filed
Nov 17, 2022
Priority
Nov 30, 2021 — provisional 63/284,104
Examiner
JORDAN, ANDREW
Art Unit
2874
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Corning Incorporated
OA Round
4 (Non-Final)
44%
Grant Probability
Moderate
4-5
OA Rounds
0m
Est. Remaining
62%
With Interview

Examiner Intelligence

Grants 44% of resolved cases
44%
Career Allowance Rate
232 granted / 523 resolved
-23.6% vs TC avg
Strong +17% interview lift
Without
With
+17.3%
Interview Lift
resolved cases with interview
Typical timeline
3y 3m
Avg Prosecution
32 currently pending
Career history
568
Total Applications
across all art units

Statute-Specific Performance

§101
0.9%
-39.1% vs TC avg
§103
63.9%
+23.9% vs TC avg
§102
21.8%
-18.2% vs TC avg
§112
12.6%
-27.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 523 resolved cases

Office Action

§103
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 . 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 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. DETAILED ACTION This is an AIA application filed November 17, 2022. The earliest effective filing date of this AIA application is seen as November 30, 2021, the date of the earliest priority application (United States provisional patent application serial number 63/284,104) for any claims which are fully supported under 35 U.S.C. 112(a) by the provisional application. The effective filing date of this AIA application is seen as November 17, 2022, the actual filing date, for any claims that are not fully supported by the foregoing provisional or non-provisional application(s). The claims filed May 11, 2026 are entered, currently outstanding, and subject to examination. This action is in response to the filing of the same date. The current status and history of the claims is summarized below: Last Amendment/Response Previously Amended: 1 1 Cancelled: 2 23 & 24 Withdrawn: none 12-23 Added: none 24 & 25 Claims 1, 3-22, and 25 are currently pending. Claims 1, 3-11, and 25 are currently outstanding. Regarding the last reply: Claim 1 was amended. Claim 2 was cancelled. No claims were withdrawn. No claims were added. Claims 1, 3-11, and 25 are currently outstanding and subject to examination. This is a final action and is the fourth action on the merits. Allowable subject matter is not indicated below. Often, in the substance of the action below, formal matters are addressed first, claim rejections second, and any response to arguments third. Special Definitions for Claim Language - MPEP § 2111.01(IV) No special definitions are seen as present in the specification regarding the language used in the claims. Consequently, the words and phrases of the claims are given their plain meaning. MPEP §§ 2173.01, 2173.05(a), and 2111.01. If special definitions are present, Applicant should bring those to the attention of the examiner and the prosecution history with its next response in a manner both specific and particular. In doing so, there will be no mistake, confusion, and/or ambiguity as to what constitutes the special definition(s). To date, Applicant has provided no indication of special definitions. While Applicant asserts the presence of special definitions, examiner sees any “decoupling distance Dd” or similar as being set forth and described according to the plain meaning of the language used. No indication is given as to how any term or phrase in the specification as originally filed "differs from the plain and ordinary meaning it would otherwise possess". MPEP § 2111.01(VI). In its remarks of May 11, 2026, Applicant asserts that the phrase "decoupling travel distance" has a special definition. However, as this is just the distance in Applicant’s Fig. 10 where the connectors are uncoupled or “decoupled”, examiner does not see any special definition here. The phrase just describes what occurs or happens in Fig. 10 when the ferrules either just meet or are about to disengage. Claim Rejections - 35 USC § 103 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 of this title, 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. 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. Claims 1, 4-6, 11, and 25 are rejected under 35 U.S.C. § 103 as being unpatentable over U.S. Patent Application Publication No. 20200292771 of Sekine et al. (Sekine) in view of legal precedent, U.S. Patent Application Publication No. 20190285823 of Tanaka et al. (Tanaka), and U.S. Patent Application Publication No. 20060088261 of Berkey et al. (Berkey). With respect to claim 1, Sekine discloses a fiber optic cable assembly (Fig. 2, ¶¶ 69 et seq.; also Figs. 1A-3B) comprising: a first cable leg (optical fiber 2, right side) comprising a first optical fiber core (optical fiber part 2A, right side; "The optical fiber part 2A is constituted with a core and a clad.", ¶ 69), a first cladding (the cladding portion of optical fiber part 2A, right side) surrounding the first optical fiber core (per common optical fiber construction), a first coating (sheath layer 2B with colored layer 2C, right side) surrounding the first cladding (2A, right side), and a first tight buffer (¶ 70, right side of 2, "An ultraviolet curing resin can be exemplified as a connection material 5 constituting the connection part 3.") surrounding and in contact with the first coating (per Fig. 2); a second cable leg (optical fiber 2, left side) comprising a second optical fiber core (optical fiber part 2A, left side; "The optical fiber part 2A is constituted with a core and a clad.", ¶ 69), a second cladding (the cladding portion of optical fiber part 2A, left side) surrounding the second optical fiber core (per common optical fiber construction), a second coating (sheath layer 2B with colored layer 2C, left side) surrounding the second cladding (2A, left side), and a second tight buffer (¶ 70, left side of 2, "An ultraviolet curing resin can be exemplified as a connection material 5 constituting the connection part 3.") surrounding and in contact with the second coating (per Fig. 2); and a buffer connecting region (connection part 3) connecting the first tight buffer (5, right) and the second tight buffer (5, left), wherein the buffer connecting region comprises a maximum thickness that is less than a maximum outer thickness dimension of the first tight buffer and that is less than a maximum outer thickness dimension of the second tight buffer (per Fig. 2 and relative dimensions/size, below); wherein each of the first cable leg and the second cable leg is devoid of a surrounding jacket and is devoid of any tensile strength member, and wherein the first tight buffer, the second tight buffer, and the buffer connecting region comprise extruded polymeric material (¶ 70, "ultraviolet curing resin" of connection material 5 is seen as a polymer per “product by process” below). The phrase "extruded polymeric material" is seen to indicate a product achieved by a process, or “product by process”. Under MPEP § 2113, product-by-process claims are not limited to the manipulations of the recited steps, only the structure implied by the steps. “[E]ven though product-by-process claims are limited by and defined by the process, determination of patentability is based on the product itself. The patentability of a product does not depend on its method of production. If the product in the product-by-process claim is the same as or obvious from a product of the prior art, the claim is unpatentable even though the prior product was made by a different process.” In re Thorpe, 777 F.2d 695, 698, 227 USPQ 964, 966 (Fed. Cir. 1985) (citations omitted). MPEP § 2113. Consequently, as the same structure is maintained, the material(s) of the first tight buffer, the second tight buffer, and the buffer connecting region is seen as disclosed in Sekine ¶ 70. Sekine as set forth above does not disclose: the first tight buffer comprising a truncated round- or oval-shaped first lobe, with the first tight buffer having a maximum layer thickness greater than a maximum layer thickness of the first coating, and with the first optical fiber core being offset relative to a centroid of the first lobe; the second tight buffer comprising a truncated round- or oval-shaped second lobe, with the second tight buffer having a maximum layer thickness greater than a maximum layer thickness of the second coating, and with the second optical fiber core being offset relative to a centroid of the second lobe; wherein the first lobe and the second lobe are truncated by a virtual overlap of the respective first and second lobes at the buffer connecting region where truncated portions of the first lobe and the second lobe contact one another, wherein a width of the fiber optic cable assembly, in a direction parallel to an imaginary line extending through the first and second optical fiber cores, is less than a sum of the maximum outer thickness dimension of the first tight buffer and the maximum outer thickness dimension of the second tight buffer, with the maximum outer thickness dimension of each of the first tight buffer and the second tight buffer being perpendicular to the width of the fiber optic cable assembly; Tanaka discloses a method for manufacturing intermittent bonding type optical fiber ribbon and intermittent bonding type optical fiber ribbon that includes (Figs. 15 and 16 in light of Fig. 1, ¶¶ 37, 38, 109, 110, and adjacents, ¶¶ 113-130 for list of reference signs): the first tight buffer (colored layer 13 for the first rightmost coated optical fiber 1) comprises a truncated round- or oval-shaped first lobe (per Figs. 15 and 16 at 7 and 3, respectively); the second tight buffer (colored layer 13 for the second rightmost coated optical fiber 1) comprises a truncated round- or oval-shaped second lobe (per Figs. 15 and 16 at 7 and 3, respectively); and the first lobe and the second lobe are truncated by a virtual overlap of the respective first and second lobes at the buffer connecting region (per Figs. 15 and 16 at 7 and 3, respectively). It would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to a truncated round- or oval-shaped buffer configuration along the lines of Tanaka in a system according to Sekine as set forth above in order to more mechanical strength and/or interconnection between otherwise separate fibers. This provides one rationale to combine the references. Another completely independent and separately sufficient rationale arises as follows. In making the combination (above), prior art elements (listed above) are combined according to known methods (per the references) to yield predictable results (a consolidated optical fiber cable) would occur as each element merely performs the same function in combination as it does separately. MPEP § 2141(III). This additional rationale is a sufficient, a complete, and an explicitly-recognized rationale to combine the references and conclude that the claim is obvious both under the controlling KSR Supreme Court case and MPEP § 2141(III)(A). Current Office policy regarding the determination of obviousness is set forth in the Federal Register notice at 89 Fed. Reg. 14449 (Feb. 27, 2024). Berkey discloses a rare earth doped single polarization double clad optical fiber and a method for making such fiber that includes (¶ 68): The silica based inner cladding 14 may have a circular outer perimeter, as shown in FIGS. 1A and 1C (preferably with an off-center situated core), or a non-circular outer perimeter as shown in FIGS. 2A, 2B and 2D, 2F. As such, cores that are off-center are seen as known in the art and would be applicable to the cores in each lobe of Sekine. It would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to use off-center cores along the lines of Berkey in a system according to Sekine in view of Tanaka as set forth above in order to provide additional optical options in a known manner, including possible operational aspects regarding the associated cladding. This provides one rationale to combine the references. Another completely independent and separately sufficient rationale arises as follows. In making the combination (above), prior art elements (listed above) are combined according to known methods (per the references) to yield predictable results (a consolidated optical fiber cable) would occur as each element merely performs the same function in combination as it does separately. MPEP § 2141(III). This additional rationale is a sufficient, a complete, and an explicitly-recognized rationale to combine the references and conclude that the claim is obvious both under the controlling KSR Supreme Court case and MPEP § 2141(III)(A). Current Office policy regarding the determination of obviousness is set forth in the Federal Register notice at 89 Fed. Reg. 14449 (Feb. 27, 2024). Lastly, where the only difference between the prior art and the claims is 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 is not patentably distinct from the prior art device. Gardner v. TEC Systems, Inc., 725 F.2d 1338, 220 USPQ 777 (Fed. Cir. 1984), cert. denied, 469 U.S. 830, 225 USPQ 232 (1984). MPEP § 2144.04(IV)(A). As the scope of claim 1 departs from that of Sekine in view of Tanaka and Berkey as set forth above only with regards to the relative dimensions, the claimed device is not patentably distinct from the prior art device of Sekine in view of Tanaka and Berkey as set forth above as set forth above. Sekine in view of Tanaka and Berkey as set forth above is not limited to any specific size or dimension in its coatings, covering, jackets, or otherwise. No benefit or advantage is indicated in the present application due to any thickness or relative width of the coatings, covering, jackets, or otherwise. Herein and below, this analysis is referred to as “relative dimensions/size”. Further, the combination would then provide: the first tight buffer comprising a truncated round- or oval-shaped first lobe (Tanaka), with the first tight buffer having a maximum layer thickness greater than a maximum layer thickness of the first coating (relative dimensions/size), and with the first optical fiber core being offset relative to a centroid of the first lobe (Berkey); the second tight buffer comprising a truncated round- or oval-shaped second lobe (Tanaka), with the second tight buffer having a maximum layer thickness greater than a maximum layer thickness of the second coating (relative dimensions/size), and with the second optical fiber core being offset relative to a centroid of the second lobe (Berkey); wherein the first lobe and the second lobe are truncated by a virtual overlap of the respective first and second lobes at the buffer connecting region where truncated portions of the first lobe and the second lobe contact one another (Tanaka), wherein a width of the fiber optic cable assembly, in a direction parallel to an imaginary line extending through the first and second optical fiber cores, is less than a sum of the maximum outer thickness dimension of the first tight buffer and the maximum outer thickness dimension of the second tight buffer (relative dimensions/size), with the maximum outer thickness dimension of each of the first tight buffer and the second tight buffer being perpendicular to the width of the fiber optic cable assembly (relative dimensions/size). With respect to claim 4, Sekine in view of Tanaka and Berkey as set forth above discloses the fiber optic cable assembly of claim 1, including one wherein the buffer connecting region is configured to be locally torn by manually pulling apart a portion of the first cable leg and a portion of the second cable leg. The cable in Sekine is seen as so configured. ¶ 116, Figs. 10A/B. With respect to claim 5, Sekine in view of Tanaka and Berkey as set forth above discloses the fiber optic cable assembly of claim 1, including one wherein the first tight buffer comprises an outer diameter of no greater than 1.6 mm, and the second tight buffer comprises an outer diameter of no greater than 1.6 mm. "A diameter of the sheath layer 2B is about 240 μm", ¶ 69. With respect to claim 6, Sekine in view of Tanaka and Berkey as set forth above discloses the fiber optic cable assembly of claim 1, including one wherein the first tight buffer comprises an outer diameter of no greater than 1 mm, and the second tight buffer comprises an outer diameter of no greater than 1 mm. "A diameter of the sheath layer 2B is about 240 μm", ¶ 69. With respect to claim 11, Sekine in view of Tanaka and Berkey as set forth above discloses the fiber optic cable assembly of claim 1, including one wherein the maximum thickness of the buffer connecting region is less than 50% of the maximum outer thickness dimension of the first buffer, and is less than 50% of the maximum outer thickness dimension of the second buffer. By visual inspection of Fig. 2. With respect to claim 25, Sekine in view of Tanaka and Berkey as set forth above discloses the fiber optic cable assembly of claim 1, including one wherein: the first tight buffer has a maximum outer thickness direction in a range of from about 900 pm to about 1.6 mm; and the second tight buffer has a maximum outer thickness direction in a range of from about 900 pm to about 1.6 mm. Relative dimensions/size. Claim 3 is rejected under 35 U.S.C. § 103 as being unpatentable over Sekine in view of Tanaka and Berkey as set forth above and further in view of U.S. Patent No. 4147407 of Eichenbaum et al. (Eichenbaum). With respect to claim 3, Sekine in view of Tanaka and Berkey as set forth above discloses the fiber optic cable assembly of claim 1, but not one wherein the buffer connecting region comprises at least one of a thermally welded interface or a solvent welded interface between the first tight buffer and the second tight buffer. Eichenbaum discloses a coatings for fiber waveguides that includes: "In one embodiment pursuant to this aspect of the invention the separate coatings placed around adjacent fibers are later bridged together in a web section as by solvent welding or alternatively, ultrasonic bonding or fusion bonding." It would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to use thermal (including ultrasonic), solvent or other welding along the lines of Eichenbaum in a system according to Sekine in view of Tanaka and Berkey as set forth above in order to fix the two fibers together. This provides one rationale to combine the references. Another completely independent and separately sufficient rationale arises as follows. In making the combination (above), prior art elements (listed above) are combined according to known methods (per the references) to yield predictable results (a fiber optic cable) would occur as each element merely performs the same function in combination as it does separately. MPEP § 2141(III). This additional rationale is a sufficient, a complete, and an explicitly-recognized rationale to combine the references and conclude that the claim is obvious both under the controlling KSR Supreme Court case and MPEP § 2141(III)(A). Current Office policy regarding the determination of obviousness is set forth in the Federal Register notice at 89 Fed. Reg. 14449 (Feb. 27, 2024). Claims 7, 9, and 10 are rejected under 35 U.S.C. § 103 as being unpatentable over Sekine in view of Tanaka and Berkey as set forth above and further in view of U.S. Patent Application Publication No. 20200192023 of Brown et al. (Brown). With respect to claim 7, Sekine in view of Tanaka and Berkey as set forth above discloses the fiber optic cable assembly of claim 1, but not one wherein each of the first cladding and the second cladding comprises a titanium dioxide coating. Brown discloses a high-density optical fiber ribbon with cladding-strengthened glass optical fibers in a common protective coating and fiber ribbon interconnects employing same that includes (¶ 11): "In one aspect, a strengthened outer cladding is made by doping silica glass with titanium dioxide (TiO.sub.2)." See also ¶¶ 23 et seq. and 76. It would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to use cladding having titania/titanium dioxide along the lines of Brown in a system according to Sekine in view of Tanaka and Berkey as set forth above in order to strengthen the optical fibers. This provides one rationale to combine the references. Another completely independent and separately sufficient rationale arises as follows. In making the combination (above), prior art elements (listed above) are combined according to known methods (per the references) to yield predictable results (a fiber optic cable) would occur as each element merely performs the same function in combination as it does separately. MPEP § 2141(III). This additional rationale is a sufficient, a complete, and an explicitly-recognized rationale to combine the references and conclude that the claim is obvious both under the controlling KSR Supreme Court case and MPEP § 2141(III)(A). Current Office policy regarding the determination of obviousness is set forth in the Federal Register notice at 89 Fed. Reg. 14449 (Feb. 27, 2024). With respect to claim 9, Sekine in view of Tanaka and Berkey as set forth above discloses the fiber optic cable assembly of claim 1, but not one further comprising at least one connector terminating a proximal end of the first cable leg and terminating a proximal end of the second cable leg. Brown, Fig. 10C shows such a connector on the left side of the figure. It would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to a terminating connector along the lines of Brown in a system according to Sekine in view of Tanaka and Berkey as set forth above in order to provide coordinated connectability for the optical fiber cable. This provides one rationale to combine the references. Another completely independent and separately sufficient rationale arises as follows. In making the combination (above), prior art elements (listed above) are combined according to known methods (per the references) to yield predictable results (a fiber optic cable) would occur as each element merely performs the same function in combination as it does separately. MPEP § 2141(III). This additional rationale is a sufficient, a complete, and an explicitly-recognized rationale to combine the references and conclude that the claim is obvious both under the controlling KSR Supreme Court case and MPEP § 2141(III)(A). Current Office policy regarding the determination of obviousness is set forth in the Federal Register notice at 89 Fed. Reg. 14449 (Feb. 27, 2024). With respect to claim 10, Sekine in view of Tanaka and Berkey as set forth above discloses the fiber optic cable assembly of claim 9, including one wherein the at least one connector comprises a first connector terminating the proximal end of the first cable leg and a second connector terminating the proximal end of the second cable leg. Brown, Fig. 10C shows such a connector on the right side of the figure. It would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to a terminating connector along the lines of Brown in a system according to Sekine in view of Tanaka and Berkey as set forth above in order to provide independent connectability for the optical fiber cable. This provides one rationale to combine the references. Another completely independent and separately sufficient rationale arises as follows. In making the combination (above), prior art elements (listed above) are combined according to known methods (per the references) to yield predictable results (a fiber optic cable) would occur as each element merely performs the same function in combination as it does separately. MPEP § 2141(III). This additional rationale is a sufficient, a complete, and an explicitly-recognized rationale to combine the references and conclude that the claim is obvious both under the controlling KSR Supreme Court case and MPEP § 2141(III)(A). Current Office policy regarding the determination of obviousness is set forth in the Federal Register notice at 89 Fed. Reg. 14449 (Feb. 27, 2024). Claim 8 is rejected under 35 U.S.C. § 103 as being unpatentable over Sekine as set forth above in view of U.S. Patent Application Publication No. 20160334587 of Isenhour (Isenhour). With respect to claim 8, Sekine in view of Tanaka and Berkey as set forth above discloses the fiber optic cable assembly of claim 1, but not one further comprising a first ferrule bonded to the first cladding with heat curable epoxy, and a second ferrule bonded to the second cladding with heat curable epoxy. Isenhour discloses a fiber optic cable assemblies for terminating fiber optic cables and methods of making that includes (¶ 35): "By way of example, the filler or bonding agent may be radiation curable epoxy such as a visible light curable epoxy or an ultraviolet (UV) light curable epoxy, a heat curable epoxy, adhesive, resin, glue, or the like for securing the same." It would have been obvious to one having ordinary skill in the art before the effective filing date of the claimed invention to use a heat-curable epoxy along the lines of Isenhour in a system according to Sekine in view of Tanaka and Berkey as set forth above in order to attach an optical component to a connector component, including a ferrule to an optical fiber at its cladding. This provides one rationale to combine the references. Another completely independent and separately sufficient rationale arises as follows. In making the combination (above), prior art elements (listed above) are combined according to known methods (per the references) to yield predictable results (a fiber optic cable) would occur as each element merely performs the same function in combination as it does separately. MPEP § 2141(III). This additional rationale is a sufficient, a complete, and an explicitly-recognized rationale to combine the references and conclude that the claim is obvious both under the controlling KSR Supreme Court case and MPEP § 2141(III)(A). Current Office policy regarding the determination of obviousness is set forth in the Federal Register notice at 89 Fed. Reg. 14449 (Feb. 27, 2024). Response to Arguments Applicant's arguments filed May 11, 2026 have been fully considered but they are not persuasive and the claim rejections are not rebutted. Applicant argues that: FIG. 15 of Tanaka fails to disclose tight buffer layers forming first and second lobes that are truncated by a virtual overlap of the respective lobes at a buffer connecting region, with the first tight buffer having a maximum layer thickness greater than a maximum layer thickness of the first coating, and with the second tight buffer having a maximum layer thickness greater than a maximum layer thickness of the second coating, according to claim 1. FIG. 15 of Tanaka, as well as FIG. 16 (reproduced hereinafter), clearly show that the ribbon forming material 7 is thinner than the underlying coating layer(s) of each optical fiber, and in this respect the ribbon forming material Examiner response: Tanaka shows truncated tight buffers 13 at 7 and 3 in Figs. 15 and 16, respectively. As shown in FIG. 16 of Tanaka, ribbon-forming material 7 is irradiated to form non- connection portions 4 between coated optical fibers of a ribbon. Where these non-connection portions 4 are formed, no "buffer connection region" exists. Moreover, to the extent that the center two fibers of Tanaka FIG. 16 are somehow considered to embody truncated lobes due to presence of the non-connection portions 4, the truncated portions of the lobes are not in contact with one another. [sic] as required by claim 1. Examiner response: Tanaka shows truncated tight buffers 13 at 7 and 3 in Figs. 15 and 16, respectively. The Examiner's reliance on Berkey to attempt to show the elements of Applicant's claim 1 is misplaced. Claim 1 recites in pertinent part "the first optical fiber core being offset relative to a centroid of the first lobe" and "the second optical fiber core being offset relative to a centroid of the second lobe.” Notably, the first cable leg comprises "a first optical fiber core, a first cladding surrounding the first optical fiber core, a first coating surrounding the first cladding, and a first tight buffer surrounding and in contact with the first coating, the first tight buffer comprising a truncated round- or oval-shaped first lobe" and the second cable leg comprises "a second optical 16 fiber core, a second cladding surrounding the second optical fiber core, a second coating surrounding the second cladding, and a second tight buffer surrounding and in contact with the second coating, the second tight buffer comprising a truncated round- or oval-shaped second lobe.” Thus, according to claim 1, it is the first tight buffer (not the first cladding) that comprises the "truncated round- or oval-shaped first lobe" and it is the second tight buffer (not the second cladding) that comprises the "truncated round- or oval-shaped second lobe." Examiner response: Berkey shows and is cited for its offset core. Per the rejection, ¶ 68 of Berkey discloses "an off-center situated core". In combination with Sekine and Tanaka, Berkey completes a combination that reads upon Applicant’s claim 1. Examiner does not see how the truncated lobes are involved with the offset cores of Berkey. In the case of each of Berkey FIGS. 2A-2G, the protective coating 18 is circular, and the core 12 is located at the centroid of the protective coating 18. Berkey's protective coating is an organic material and is thus analogous to the polymeric tight buffers of Applicant's claim 1. Conversely, Berkey's silica-based cladding layers 14, 16 do not embody tight buffers. Examiner response: The other references are seen as providing the other remaining elements and to cite elements of a secondary rejection not part of the combination is to miss the point. The rejection is not rebutted. In contrast to the subject matter considered in Gardner V. TEC Systems, Inc., the subject matter of Applicant's claim 1 provides qualitative differences over the prior art that confer different properties. Assuming comparable dimensions for respective lobes containing fiber cores, the fiber optic cable assembly according to Applicant's FIG. 5 is significantly smaller in width than fiber optic cable assemblies disclosed by Sekine, due to the truncated form of the first lobe and second lobe by their virtual overlap at the buffer connecting region, wherein a width of the fiber optic cable assembly, in a direction parallel to an imaginary line extending through the first and second optical fiber cores, is less than a sum of the maximum outer thickness dimension of the first tight buffer and the maximum outer thickness dimension of the second tight buffer. This enables a greater number (higher density) of fiber optic cores to occupy a given volume, such as a conduit. The dimensional ratio recited in Applicant's claim 1 therefore confers a meaningful qualitative benefit over the prior art, contrary to the situation found by the court in Gardner V. TEC Systems, Inc. Examiner response: Arbitrary variations of dimensions are not seen to promote the “Progress of Science and useful Arts”. The rule applied to the specific case of Gardner is seen also to apply to the current art. Reductions in size may always be achieved by reducing elements’ size or thicknesses thereof. The rejection is not rebutted. Applicant's arguments with regards to the remaining claims all rely upon the arguments set forth above. Consequently, these remaining arguments as seen as being addressed by the examiner's corresponding remarks. Applicant’s remaining arguments fail to comply with 37 CFR 1.111(b) because they amount to a general allegation that the claims define a patentable invention without specifically pointing out how the language of the claims patentably distinguishes them from the references. As such, the examiner makes no remarks regarding them. Conclusion Applicant’s publication US 20230168441 A1 published June 1, 2023 was previously cited. As a possibly helpful insight for Applicant regarding lobed optical fiber structures, see also U.S. Patent Application Publication No. 20030118301 of Hurley et al. (Hurley) which is seen to show the missing elements of Sekine pertinent to claim 1, above. No new art is cited. Applicant's amendment necessitated any 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 extension fee 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 date of this final action. Any inquiry concerning this communication or earlier communications from the examiner should be directed to ANDREW JORDAN whose telephone number is (571) 270-1571. The examiner can normally be reached most days 1000-1800 PACIFIC TIME ZONE (messages are returned). 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. While examiner does not examine over the phone (see 37 C.F.R. § 1.2), examiner is glad to clarify or discuss issues so long as it forwards prosecution. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Thomas (Tom) HOLLWEG can be reached at (571) 270-1739. 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. /Andrew Jordan/ Primary Examiner, Art Unit 2874 V: (571) 270-1571 (Pacific time) F: (571) 270-2571 July 20, 2026
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Prosecution Timeline

Show 3 earlier events
Oct 22, 2025
Final Rejection mailed — §103
Dec 15, 2025
Response after Non-Final Action
Jan 21, 2026
Request for Continued Examination
Jan 28, 2026
Response after Non-Final Action
Feb 11, 2026
Non-Final Rejection mailed — §103
May 11, 2026
Response Filed
Jul 22, 2026
Final Rejection mailed — §103
Sep 22, 2026
Response after Non-Final Action

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12681252
DEVICE AND METHOD FOR SEALING CABLES IN TELECOMMUNICATIONS ENCLOSURES
3y 9m to grant Granted Jul 14, 2026
Patent 12681232
HYBRID CAST AND MOLD FOR A WAVEGUIDE OPTICAL COMBINER
2y 5m to grant Granted Jul 14, 2026
Patent 12671498
OPTICAL RECEIVING APPARATUS AND OPTICAL RECEIVING METHOD
3y 9m to grant Granted Jun 30, 2026
Patent 12669656
Array and Duplex Polarity Schemes for Optical Links Using Multi-Row Optical Connectors
2y 7m to grant Granted Jun 30, 2026
Patent 12663842
BLADED CHASSIS SYSTEMS
3y 2m to grant Granted Jun 23, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

4-5
Expected OA Rounds
44%
Grant Probability
62%
With Interview (+17.3%)
3y 3m (~0m remaining)
Median Time to Grant
High
PTA Risk
Based on 523 resolved cases by this examiner. Grant probability derived from career allowance rate.

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