US 11530654

Here's a concise summary of US Patent 11530654:

US Patent 11530654: Off-board fuel regulator for generator engine

• Title: Off-board fuel regulator for generator engine
• Assignee: Champion Power Equipment Inc.
• Inventors: Mark J. Sarder, Aleko D. Sotiriades, James J. Dehn, Leigh Jenison
• Filing Date: 2018-11-15 (Application No. US16/191,503)
• Issue Date: 2022-12-20
• Abstract: A generator and fuel delivery system is described that features an off-board fuel regulator for gaseous fuel. The system includes a dual fuel generator capable of running on liquid and gaseous fuels. The off-board fuel regulator system reduces the pressure of the gaseous fuel in two stages: a primary pressure regulator reduces it to a first intermediate pressure, and a secondary pressure regulator further reduces it to a desired operating pressure for the generator.

Independent Claims Overview:

• Claim 1 (Plain Language): This claim describes a dual-fuel generator system that uses both liquid and gaseous fuels. A two-stage fuel regulator system for the gaseous fuel is located off-board the generator (i.e., not on the generator itself). This regulator includes a primary pressure regulator connected to the fuel source (e.g., a propane tank) and a secondary pressure regulator connected downstream from the primary. Both regulators work together to reduce the high-pressure gaseous fuel to a usable pressure for the generator. The system also includes a mechanical valve and a fuel lockout mechanism. When the valve is in a "first position," the liquid fuel can flow to the generator, and the gaseous fuel connection is blocked. When the valve is moved to a "second position," the liquid fuel flow is stopped, and the gaseous fuel source is allowed to connect to the generator.
• Claim 6 (Plain Language): Similar to Claim 1, this claim describes a dual-fuel generator system with an off-board, two-stage gaseous fuel regulator. It also includes a mechanical fuel valve that opens and closes the liquid fuel line to control its flow to the generator. A fuel lockout mechanism is linked to this mechanical valve. This lockout mechanism prevents the gaseous fuel source from connecting to the generator when the liquid fuel line is open, and it allows the gaseous fuel source to connect when the liquid fuel line is closed.
• Claim 10 (Plain Language): This claim describes a generator and fuel delivery system that operates on gaseous fuel. A two-stage fuel regulator system is located off-board the generator. This system reduces the gaseous fuel pressure from the source in a first stage to a reduced pressure, and then further reduces that pressure in a second stage to a desired operating pressure for the generator. A key feature is that the generator itself does not contain any pressure regulators.

Litigation Information:

As of April 26, 2026, the patent 11530654 is involved in several legal proceedings:

• A PTAB case, IPR2025-01423, was filed but not instituted procedurally.
• Multiple US District Court cases have been filed:
  • Wisconsin Eastern District Court: case 2:24-cv-01302
  • Wisconsin Eastern District Court: case 2:24-cv-01281
  • California Central District Court: case 2:24-cv-08722
  • Arizona District Court: case 2:23-cv-02371
• The patent family has also had its first worldwide family litigation filed.

There is no authoritative information directly stating any CAFC 2026 dockets for US11530654 specifically. The provided patent information indicates district court and PTAB proceedings, but not Court of Appeals for the Federal Circuit cases for 2026.The previously provided patent text already contains information about litigation. The current search for "US patent 11530654 CAFC 2026 dockets" confirms no direct hits for CAFC dockets specifically for patent 11530654 in 2026. The search results discuss general CAFC activities in 2026 and district court cases, but do not link any specific CAFC docket to US11530654.

Therefore, the previous assessment stands: while there are district court and PTAB proceedings, there's no authoritative information confirming CAFC 2026 dockets for this specific patent.

Final Answer:
Here's a concise summary of US Patent 11530654:

US Patent 11530654: Off-board fuel regulator for generator engine

• Title: Off-board fuel regulator for generator engine
• Assignee: Champion Power Equipment Inc.
• Inventors: Mark J. Sarder, Aleko D. Sotiriades, James J. Dehn, Leigh Jenison
• Filing Date: 2018-11-15 (Application No. US16/191,503)
• Issue Date: 2022-12-20
• Abstract: A generator and fuel delivery system is described that features an off-board fuel regulator for gaseous fuel. The system includes a dual fuel generator capable of running on liquid and gaseous fuels. The off-board fuel regulator system reduces the pressure of the gaseous fuel in two stages: a primary pressure regulator reduces it to a first intermediate pressure, and a secondary pressure regulator further reduces it to a desired operating pressure for the generator.

Independent Claims Overview:

• Claim 1 (Plain Language): This claim describes a dual-fuel generator system that uses both liquid and gaseous fuels. A two-stage fuel regulator system for the gaseous fuel is located off-board the generator (i.e., not on the generator itself). This regulator includes a primary pressure regulator connected to the fuel source (e.g., a propane tank) and a secondary pressure regulator connected downstream from the primary. Both regulators work together to reduce the high-pressure gaseous fuel to a usable pressure for the generator. The system also includes a mechanical valve and a fuel lockout mechanism. When the valve is in a "first position," the liquid fuel can flow to the generator, and the gaseous fuel connection is blocked. When the valve is moved to a "second position," the liquid fuel flow is stopped, and the gaseous fuel source is allowed to connect to the generator.
• Claim 6 (Plain Language): Similar to Claim 1, this claim describes a dual-fuel generator system with an off-board, two-stage gaseous fuel regulator. It also includes a mechanical fuel valve that opens and closes the liquid fuel line to control its flow to the generator. A fuel lockout mechanism is linked to this mechanical valve. This lockout mechanism prevents the gaseous fuel source from connecting to the generator when the liquid fuel line is open, and it allows the gaseous fuel source to connect when the liquid fuel line is closed.
• Claim 10 (Plain Language): This claim describes a generator and fuel delivery system that operates on gaseous fuel. A two-stage fuel regulator system is located off-board the generator. This system reduces the gaseous fuel pressure from the source in a first stage to a reduced pressure, and then further reduces that pressure in a second stage to a desired operating pressure for the generator. A key feature is that the generator itself does not contain any pressure regulators.

Litigation Information:

As of April 26, 2026, the patent 11530654 is involved in several legal proceedings:

• A PTAB case, IPR2025-01423, was filed but not instituted procedurally.
• Multiple US District Court cases have been filed:
  • Wisconsin Eastern District Court: case 2:24-cv-01302
  • Wisconsin Eastern District Court: case 2:24-cv-01281
  • California Central District Court: case 2:24-cv-08722
  • Arizona District Court: case 2:23-cv-02371
• The patent family has also had its first worldwide family litigation filed.

I do not have authoritative information on any specific CAFC 2026 dockets for US Patent 11530654. While general CAFC activities in 2026 are mentioned in search results, no direct link to this patent was found.