Prosecution Insights
Last updated: September 17, 2026
Application No. 18/411,948

LIGHT POLARISATION CONVERTER AND METHOD OF MANUFACTURE

Non-Final OA §102
Filed
Jan 12, 2024
Priority
Jul 16, 2021 — GB 2110288.4 +1 more
Examiner
KIANNI, KAVEH C
Art Unit
2874
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Smart Photonics Holding B V
OA Round
1 (Non-Final)
87%
Grant Probability
Favorable
1-2
OA Rounds
0m
Est. Remaining
98%
With Interview

Examiner Intelligence

Grants 87% — above average
87%
Career Allowance Rate
1092 granted / 1253 resolved
+19.2% vs TC avg
Moderate +11% lift
Without
With
+11.0%
Interview Lift
resolved cases with interview
Typical timeline
2y 4m
Avg Prosecution
29 currently pending
Career history
1276
Total Applications
across all art units

Statute-Specific Performance

§101
0.4%
-39.6% vs TC avg
§103
61.9%
+21.9% vs TC avg
§102
10.9%
-29.1% vs TC avg
§112
25.6%
-14.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1253 resolved cases

Office Action

§102
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 . Detailed Action. Applicant’s election with traverse of Group I invention claims 1-9 in response/amendment submitted on 6/22/26 is acknowledged. No reason for traverse is cited and thus the requirement is still deemed proper and is therefore made FINAL. Information Disclosure Statement The prior art documents submitted by Applicant(s) in the information Disclosure Statement(s) have all been considered and made of record (note the attached copy of form(s) PTO-1449). 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 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. (a)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention. 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. Claim(s) 1-8 and 10 is/are rejected under 35 U.S.C. 102(a)(2) as being anticipated by Goi et al., US 9529151 B2. Regarding claim 1, Goi teaches a light polarisation converter for a photonic integrated circuit (see figs. 1-30 and abstract), comprising: a “substrate” (see at least figs. 1-7 top layer/portion: i. e., 16a, 16b, 51 as “substrate” for providing support for the waveguide/core 11c) comprising: a first surface and a second surface (see item 16a and specification: a first surface and a second surface (see item 16a and specification): The core continuously exists with the same height between the core 11c of the first waveguide portion 11 and the core 12c of the thick plate portion 14 and the second waveguide portion 12 of the polarization rotation portion 13. That is, upper surfaces 11a and 12a of the cores 11 and 12c are flush with an upper surface 14a of the thick plate portion 14, and lower surfaces 11b and 12b of the cores 11c and 12c are flush with a lower surface 14b of the thick plate portion 14. and a waveguide 11c comprising a first waveguide 11c/51r portion in contact with the first surface, and a second waveguide portion in contact with the second surface (see at least figs. 1-7 and/or Figs. 29-30), PNG media_image1.png 813 413 media_image1.png Greyscale PNG media_image2.png 708 530 media_image2.png Greyscale wherein the second surface is offset from the first surface along a first axis and a second axis each perpendicular to a light propagation direction for converting polarisation of the light, such that the second waveguide portion is offset from the first waveguide portion surface (see at least fig. 7, item 11c; wherein the offset is the distance between the tapered gap surfaces between the core/waveguide surfaces with that of the “substrate”). However, Gu does not explicitly use the term “photonic” in the term “photonic integrated circuit her uses “integrated circuit” with optical waveguide. It is obvious/well-known to an ordinary skill in the art to which the claimed invention pertains before the effective filing date of the claimed invention that an integrated circuits in conjunction with integrated photonics such as optical waveguide is/known as PIC for modifying and routing light beam in particular direction with predictable results. 2. (Original) The light polarisation converter according to claim 1, wherein: the substrate comprises a third surface between the first surface and the second surface, the third surface sloped relative to the first surface (shown in at least fig. 7, with at least three surfaces). 3. (Original) The light polarisation converter according to claim 2, wherein: the third surface is substantially at a 90 degree angle relative to the first surface (shown in at least fig. 7b). . 4. (Original) The light polarisation converter according to claim 2, wherein: the first axis is substantially parallel to the plane of the first surface; the third surface is at an angle less than 90 degrees relative to the first surface; the second surface is offset from the first surface along the first axis by an amount greater than a width of the first surface along the first axis; and the waveguide comprises an intermediate waveguide portion in contact with the third surface and between the first waveguide portion and the second waveguide portion (shown in at least fig. 7A-7B). 5. (Original) The light polarisation converter according to claim 1, wherein: the light polarisation converter is for converting between a first linear polarisation of a given wavelength of light and a second linear polarisation of the given wavelength of light; and a length of the waveguide in the light propagation direction is substantially equal to an odd integer multiplied by half of a beat length for the given wavelength of light (see col. 7, 5th parag.). 6. (Original) The light polarisation converter according to claim 1, wherein: a length of the waveguide in the light propagation direction is substantially equal to an odd integer multiplied by a quarter of a beat length for the given wavelength of light (see col. 7, 5th parag.). 7. (Original) The light polarisation converter according to claim 1, wherein: the substrate comprises a first substrate layer 16a and a second substrate layer 16b; and the first substrate layer comprises the first surface and the second substrate layer comprises the second surface (shown in at least fig. 7). 8. (Original) The light polarisation converter according to claim 7, wherein: the substrate comprises a third layer between the first substrate layer and the second substrate layer, the first second and third layers are stacked such that the first layer is in contact with the third layer and the third layer is in contact with the second layer, the third layer comprising a material different to that of the first substrate layer and the second substrate layer (shown in at least fig. 7, wherein the second substrate 16b material is different than that 16a material ). Regarding claim 10, Goi teaches photonic integrated circuit comprising a light polarisation converter (see figs. 1-30 and abstract)comprising: a “substrate” (see at least figs. 1-7 top layer/portion: i. e., 16a, 16b, 51 as “substrate” for providing support for the waveguide/core 11c) comprising: a first surface and a second surface a first surface and a second surface (see item 16a and specification: a first surface and a second surface (see item 16a and specification): The core continuously exists with the same height between the core 11c of the first waveguide portion 11 and the core 12c of the thick plate portion 14 and the second waveguide portion 12 of the polarization rotation portion 13. That is, upper surfaces 11a and 12a of the cores 11 and 12c are flush with an upper surface 14a of the thick plate portion 14, and lower surfaces 11b and 12b of the cores 11c and 12c are flush with a lower surface 14b of the thick plate portion 14. and a waveguide 11c comprising a first waveguide portion in contact with the first surface, and a second waveguide portion in contact with the second surface (see at least figs. 1-7, item 11c), wherein the second surface is offset from the first surface along a first axis and a second axis each perpendicular to a light propagation direction for converting polarisation of the light, such that the second waveguide portion is offset from the first waveguide portion (see at least fig. 7, item 11c; wherein the offset is the distance between the tapered gap surfaces between the core/waveguide surfaces with that of the “substrate”). However, Gu does not explicitly use the term “photonic” in the term “photonic integrated circuit her uses “integrated circuit” with optical waveguide. It is obvious/well-known to an ordinary skill in the art to which the claimed invention pertains before the effective filing date of the claimed invention that an integrated circuits in conjunction with integrated photonics such as optical waveguide is/known as PIC for modifying and routing light beam in particular direction with predictable results. . Allowable Subject Matter Claim 9 is objected to as being dependent upon a rejected base claim, but would be allowable if rewritten in independent form including all of the limitations of the base claim and any intervening claims. Citation of Relevant Prior Art Prior art made of record and not relied upon is considered pertinent to applicant’s disclosure. In accordance with MPEP 707.05 the following references are pertinent in rejection of this application since they provide substantially the same information disclosure as this patent does. These references are: US 20170075063 A1 US 20120163750 A1 US 20120076465 A1 US 9170373 B2 US 20170199330 A1 US 20190064439 A1 EP 3009869 A1 US 20130322813 A1 US 5790583 A US 5878070 A US 20190011800 A1 US 20220120966 A1 US 20230040355 A1 US 9766404 B1 US 9690043 B2 US 20110019958 A1 US 20140126855 A1 US 20180120504 A1 CN 102483491 A US 20170104109 A1 US 20170033884 A1 US 11409038 B1 US 20190384135 A1 US 6166372 A CN 1423163 A JP 2017525958 A JP 3441385 B2 Contact Information Any inquiry concerning this communication or earlier communications from the examiner should be directed to KAVEH C KIANNI whose telephone number is (571)272-2417. The examiner can normally be reached on 9-19. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Thomas Hollweg can be reached on571-270-1739. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of an application may be obtained from the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see http://pair-direct.uspto.gov. Should you have questions on access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative or access to the automated information system, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /KAVEH C KIANNI/Primary Examiner, Art Unit 2874
Read full office action

Prosecution Timeline

Jan 12, 2024
Application Filed
Jun 22, 2026
Response Filed
Sep 02, 2026
Non-Final Rejection mailed — §102 (current)

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Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

1-2
Expected OA Rounds
87%
Grant Probability
98%
With Interview (+11.0%)
2y 4m (~0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1253 resolved cases by this examiner. Grant probability derived from career allowance rate.

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