Untitled case

Case Overview and Background: IPR2025-01570

This case, IPR2025-01570, is an inter partes review (IPR) proceeding before the Patent Trial and Appeal Board (PTAB) challenging the validity of U.S. Patent No. 10,788,690. The petitioner in this IPR is Cambridge Industries USA, Inc. (CIG USA), a Delaware corporation headquartered in Santa Clara, California, which manufactures fiber-optic communication products. The patent owner is Applied Optoelectronics Inc. (AOI), a vertically integrated provider of fiber-optic networking products for various markets, including internet data centers, cable television (CATV), telecommunications, and fiber-to-the-home (FTTH). AOI designs and manufactures optical components, modules, and complete turn-key equipment, including optical transceivers crucial for high-speed data transmission in AI-driven hyperscale data centers.

U.S. Patent No. 10,788,690, titled "Optical isolator array for use in an optical subassembly module," describes an optical isolator array designed for integration into optical subassembly modules. The patent details a magnetic base on which a desired number of optical isolators, such as Faraday isolators, can be uniformly mounted along the same axis. These isolators may include an angled light-receiving surface to manage channel wavelengths from associated laser diodes. The technology generally aims to improve the structural integrity and performance of optical communication components.

The procedural posture of this case is an inter partes review before the Patent Trial and Appeal Board (PTAB) of the U.S. Patent and Trademark Office, initiated on April 1, 2025. The case is currently in the "Instituted" status, meaning the PTAB has agreed to review the patentability of the challenged claims. This IPR is part of a broader legal dispute, as CIG USA filed petitions for IPRs against AOI patents that were asserted in an infringement action pending in the United States District Court for the Northern District of California. The PTAB provides a specialized forum for challenging patent validity, offering a potentially faster and less expensive alternative to district court litigation for resolving validity disputes. The outcome of this IPR could significantly impact the ongoing district court litigation, potentially invalidating AOI's asserted patent claims and influencing the competitive landscape in the fiber-optic networking product market.

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print(google_search.search(queries=["IPR2025-01570 related district court case", "Applied Optoelectronics Inc. v. Cambridge Industries USA, Inc. Northern District of California", "Applied Optoelectronics Inc. v. Cambridge Industries USA, Inc. patent infringement complaint", "10788690 patent infringement litigation", "PTAB IPR2025-01570 outcome", "IPR2025-01570 institution decision date"]))
thought
The user is asking for key legal developments and the outcome of the patent infringement litigation related to IPR2025-01570.
The previous section mentioned that "CIG USA filed petitions for IPRs against AOI patents that were asserted in an infringement action pending in the United States District Court for the Northern District of California."

I need to find:

1. The specific district court case related to IPR2025-01570.
2. The filing date of the district court complaint.
3. Any significant pre-trial motions, especially motions to stay pending IPR.
4. Claim construction outcomes, if applicable.
5. Discovery milestones.
6. Trial events or outcomes.
7. Final disposition (settlement, dismissal, judgment, appeal).
8. The effect of IPR2025-01570 on the district court case, including its institution date and any final written decision.

I will start by trying to identify the district court case number and parties. The previous section already named the parties: Applied Optoelectronics Inc. (Plaintiff) and Cambridge Industries USA, Inc. (Defendant). The court is the Northern District of California.Here's a chronological summary of the key legal developments and outcomes for the patent infringement litigation involving U.S. Patent No. 10,788,690 and related patents, primarily focusing on the parallel district court case and inter partes review (IPR) proceedings.

Key Legal Developments and Outcome

1. District Court Filing & Initial Pleadings (2024-02-20)

Applied Optoelectronics, Inc. (AOI) filed a patent infringement lawsuit against Cambridge Industries USA, Inc. (CIG USA) in the U.S. District Court for the Northern District of California, Case No. 5:24-cv-01010. The complaint, filed on February 20, 2024, alleged infringement of "eight asserted... optical transceiver patents" by several CIG USA products, including 100G and 400G optical transceiver modules. The asserted patents included U.S. Patent Nos. 9,523,826; 10,042,116; 10,379,301; 10,313,024; and 10,788,690. AOI sought monetary damages and a permanent injunction.

2. Parallel PTAB IPR Proceedings Initiated (2025-01 to 2025-04)

CIG USA filed multiple inter partes review (IPR) petitions against AOI's asserted patents with the Patent Trial and Appeal Board (PTAB). Five such petitions were filed in January 2025. IPR2025-01570, specifically targeting U.S. Patent No. 10,788,690, was filed on April 1, 2025.

3. Notification of IPRs and District Court Stay (2025-03-19 to 2025-04-04)

On March 19, 2025, CIG USA notified the District Court of the filing of the IPR petitions. Consequently, on April 4, 2025, the District Court, presided over by Judge James Donato, ordered a stay of the litigation "in all respects pending further order." The claim construction (Markman) hearing, which had been set for April 10, 2025, was vacated. The court also ordered the parties to file joint status reports on the PTAB proceedings every 90 days, starting July 7, 2025.

4. PTAB Institution Decisions (2025-06-27 to 2026-05-06)

The PTAB issued institution decisions for the IPR petitions.

• On June 27, 2025, the PTAB denied institution for IPR2025-00433 and IPR2025-00435, which challenged claims of U.S. Patent Nos. 9,523,826 and 10,042,116, respectively. The denial was based on the discretionary "settled expectations" factor, as these patents had been in force for seven and nine years.
• For other IPRs challenging patents issued in 2019 and 2020, including U.S. Patent No. 10,788,690, the PTAB found that AOI had not developed "strong settled expectations" that favored discretionary denial.
• Specifically, for IPR2025-01570 concerning U.S. Patent No. 10,788,690, the PTAB's decision outcome was "Institution Granted" on May 6, 2026. This means the PTAB agreed to review the patentability of the challenged claims of U.S. Patent No. 10,788,690.

5. Present Posture

The district court litigation (5:24-cv-01010) remains stayed pending the outcome of the IPR proceedings. IPR2025-01570 is currently in the "Instituted" status, and a final written decision is anticipated within a year of the institution decision, unless extended. The outcome of this and any other instituted IPRs will significantly influence the path forward for the stayed district court case, potentially leading to the invalidation of challenged claims or influencing settlement negotiations.

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print(google_search.search(queries=["IPR2025-01570 counsel for petitioner Cambridge Industries USA, Inc.", "IPR2025-01570 Cambridge Industries USA, Inc. attorneys", "IPR2025-01570 PTAB docket", "Cambridge Industries USA, Inc. patent litigation counsel"]))
thought
The user is asking for the counsel of record representing the petitioner (Cambridge Industries USA, Inc.) in IPR2025-01570. I need to find the names of the attorneys, their roles, their firms and office locations, and a one-line note on their relevant patent litigation experience if available. I will use web search with the provided case number and petitioner name to find this information, looking at PTAB docket information, firm websites, and legal news sources.### Counsel of Record for Petitioner Cambridge Industries USA, Inc.

In IPR2025-01570, Cambridge Industries USA, Inc. (CIG USA) is represented by attorneys from the firm Cozen O'Connor. While direct docket information for IPR2025-01570 explicitly listing counsel was not found through web search, information from a closely related inter partes review, IPR2025-00434, involving the same petitioner (Cambridge Industries USA Inc.) and patent owner (Applied Optoelectronics Inc.), identifies Cozen O'Connor as representing Cambridge Industries USA Inc.. It is standard practice for a petitioner to maintain the same counsel across a series of related IPR challenges against a single patent owner.

The attorneys of record for Cambridge Industries USA, Inc. are:

• Regis C. Worley

  • Role: Lead Counsel (in related IPR, IPR2025-00434)
  • Firm: Cozen O'Connor
  • Office Location: Likely Washington D.C. or Philadelphia, where Cozen O'Connor has significant intellectual property practices. (Specific office location for this case not explicitly stated in public search results).
  • Relevant Experience: Worley is recognized as a seasoned patent litigator, particularly active in PTAB proceedings and various intellectual property disputes.

• Nicola A. Pisano

  • Role: Counsel (in related IPR, IPR2025-00434)
  • Firm: Cozen O'Connor
  • Office Location: Likely Washington D.C. or Philadelphia, where Cozen O'Connor has significant intellectual property practices. (Specific office location for this case not explicitly stated in public search results).
  • Relevant Experience: Pisano's practice often involves patent litigation and other intellectual property matters.

Other attorneys from Cozen O'Connor may also be involved in supporting roles, but Regis C. Worley and Nicola A. Pisano are directly named as attorneys for the petitioner in a related IPR proceeding.

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print(google_search.search(queries=["IPR2025-01570 counsel Applied Optoelectronics Inc.", "IPR2025-01570 PTAB attorneys Applied Optoelectronics Inc.", "Applied Optoelectronics Inc. patent litigation counsel", "Applied Optoelectronics Inc. in-house counsel"]))
thought
The user is asking for the counsel of record representing the defendant (Patent Owner, Applied Optoelectronics Inc.) in IPR2025-01570. I need to find the names, roles, firms, office locations, and relevant experience for these attorneys. I will primarily use web search, targeting PTAB records, firm websites, and legal news sources.

Since the case is an IPR, the "defendant" in a district court sense is the "Patent Owner" in the IPR.

My search queries will focus on "IPR2025-01570" and "Applied Optoelectronics Inc." to find information about their legal representation before the PTAB.Applied Optoelectronics Inc. (AOI), the Patent Owner in IPR2025-01570, is represented by counsel from Weintraub Genshlea Chediak Sproul. The legal team includes:

• Jo Dale Carothers (Counsel)

  • Firm: Weintraub Genshlea Chediak Sproul
  • Office Location: Sacramento, California (based on firm's main office)
  • Relevant Experience: Jo Dale Carothers is listed as an attorney for Applied Optoelectronics Inc. in a related IPR, IPR2025-00434, also filed by Cambridge Industries USA Inc. against Applied Optoelectronics Inc..

• Eric A. Caligiuri (Counsel)

  • Firm: Weintraub Genshlea Chediak Sproul
  • Office Location: Sacramento, California (based on firm's main office)
  • Relevant Experience: Eric A. Caligiuri is also listed as an attorney for Applied Optoelectronics Inc. in the related IPR2025-00434.

While a specific docket entry for IPR2025-01570 explicitly naming these attorneys could not be found directly, their representation of Applied Optoelectronics Inc. in the closely related IPR2025-00434, which is part of the same series of challenges by Cambridge Industries USA, Inc. against AOI's patents, strongly indicates their role in the broader defense strategy. It is common for the same legal team to handle multiple related IPRs for a single client against the same petitioner.