RISC-V Processor Core Technology Landscape 2026
RISC-V Processor Core Technology Landscape 2026
RISC-V patent activity is accelerating rapidly, with China holding approximately 80% of filings in this dataset. From vector processors to x86 hardware translation, ISA extensibility is the defining competitive frontier.
How RISC-V Has Matured from Academia to Competitive Silicon
RISC-V is an open, royalty-free ISA built on RISC principles, characterized by a small base instruction set (RV32I/RV64I), a modular extension framework (M, F, D, V, C, H, and custom extensions), and multiple privilege levels: machine, supervisor, and user. This architecture underpins a rapidly diversifying ecosystem of processor cores.
The dataset spans 2009 to 2026, revealing three phases: foundational work on binary translation (2009–2018), ecosystem expansion including Ara vector processor silicon tapeout and HPC cluster prototyping with Monte Cimone (2019–2022), and advanced specialization in 2023–2026 covering out-of-order low-power cores, hardware ISA translation, and FHE processors.
Five principal sub-domains define the current technology field: core pipeline microarchitecture; multi-core and many-core architectures with 3D interconnect and cache coherency; ISA extension and co-design including RVV and binary translation; virtualization and mixed-criticality systems using the H-extension; and tooling covering virtual prototyping and compiler infrastructure.
Among the retrieved patent records, China dominates with approximately 80% of filings, followed by India and the United States, with no EP, JP, or KR filings appearing. Key Chinese assignees include Shandong Inspur Science Research Institute (5 patents), Institute of Software Chinese Academy of Sciences (4 patents), and Shanghai Xinlijii Semiconductor (4 patents).
Filing Trends and Technology Cluster Distribution in RISC-V Patents
The RISC-V patent dataset reveals three innovation phases from 2009 to 2026, with 2024–2026 filings numerically dominant. Five technology clusters — core pipeline, vector processing, multi-core, virtualization/ISA interoperability, and tooling — represent distinct IP concentration zones.
RISC-V Patent Filings by Technology Cluster
Core pipeline microarchitecture and ISA extension co-design together represent the largest share of retrieved patents, followed closely by the fast-growing virtualization and ISA interoperability cluster.
↗ Click bars to exploreRISC-V Patent Filing Activity by Innovation Phase (2009–2026)
The 2023–2026 advanced specialization phase dominates numerically in the dataset, with 2024–2026 filings representing the most active period, compared to limited foundational-period output in 2009–2018.
↗ Click bars to exploreWhere RISC-V Processor Innovation Is Being Deployed: Key Application Domains
The RISC-V patent dataset spans at least six identified application domains, from deeply embedded IoT systems to high-performance computing clusters and aerospace robotics, each linked to distinct named assignees and institutional research programs.
Embedded and IoT Systems
The Institute of Software, Chinese Academy of Sciences filed two active patents on AIoT-optimized Linux OS stacks (2022, CN) and a scalable OS for extension instruction sets (2024, CN). Zhejiang University’s Fast Interrupt System for RISC-V Architecture (2022, CN) addresses deterministic interrupt latency critical for RTOS deployments. Near-threshold operation and DSP extensions for endpoint devices appeared in literature by 2018.
Embedded SystemsMixed-Criticality and Automotive
Shenzhen Lulin Technology (2026, CN) filed a RISC-V virtualization acceleration patent using Byzantine consensus for VM migration feasibility verification and zero-copy VM state snapshot transfer. VOSySmonitoRV (2021) demonstrated software-only partitioning for environments without hardware virtualization. The open-source Bao hypervisor evaluation on a Rocket chip with FPGA-accelerated simulation demonstrates early production-readiness signals for automotive and industrial safety.
VirtualizationHigh-Performance Computing and Servers
Monte Cimone (2022) demonstrated a multi-node RISC-V cluster based on the SiFive U740 SoC running a full HPC software stack. A 64-bit RISC-V processor optimized for HPC targeting a 180nm ASIC process node was published from India in 2025. Shandong University filed a RISC-V Server CPU UEFI Firmware Boot Method (2024, CN), signaling expanding server-class ambitions.
High-Performance ComputingAI and Machine Learning Inference
Tsinghua University filed a RISC-V Compatible Fully Homomorphic Encryption Algorithm General Processor (2025, CN), featuring in-situ computation cores to minimize data movement for privacy-preserving workloads. Guangdong Saiboan Intelligent Technology filed hardware-aware multi-layer IR compiler patents (2025, CN) introducing a three-tier SPU/VPU/MPU abstraction aware of cache hierarchy at compile time. The Institute of Software, CAS filed a scalable OS for RISC-V architecture extension instruction sets (2024, CN) to support custom ML accelerator extensions.
AI InferenceLeading RISC-V Patent Assignees Driving Core Processor IP in 2026
Among the retrieved patent records, Chinese institutional and commercial assignees dominate, with Shandong Inspur Science Research Institute leading at 5 filings and the Institute of Software, Chinese Academy of Sciences holding 4 patents spanning AIoT OS and security analysis. The US filings from Alibaba Innovation and Shandong Lingneng represent offshore prosecution of Chinese-originated innovations.
Top RISC-V Patent Assignees by Filing Count
↗ Click bars to exploreShandong Inspur Science Research Institute
Shandong Inspur Science Research Institute Co., Ltd. is the top assignee in this dataset with 5 patents filed in 2024–2025 (CN jurisdiction). Their portfolio covers real-time thread scheduling (2024), bus systems, ultra-wide RISC-V long vector processors (2025), and dual-ISA operation enabling RISC-V and x86 coexistence. The ultra-wide vector processor patent describes a 64-bit scalar core coupled with multiple vector clusters using a full cross-bar interconnect for long-vector scalability.
China — CNInstitute of Software, Chinese Academy of Sciences
The Institute of Software, Chinese Academy of Sciences holds 4 patents in this dataset spanning 2022–2024 (CN jurisdiction), covering AIoT-optimized Linux OS stacks, a scalable OS for RISC-V extension instruction sets, and a dynamic analysis method for RISC-V applications based on hardware virtualization (2023). Their OS patents directly target the scaffolding required for custom ML accelerator extensions on RISC-V platforms. These filings reflect state-aligned semiconductor independence initiatives in China.
China — CNFour Forward-Looking RISC-V Technology Vectors Signaled in 2025–2026 Filings
The most recent filings (2025–2026) in this dataset identify four distinct forward directions: hardware-level ISA bridge architectures, AI/ML-targeted compiler infrastructure, adaptive multi-core cache coherency, and security and privacy-preserving compute.
Hardware-Level x86/RISC-V ISA Bridge Architectures
Multiple 2025–2026 filings describe x86-to-RISC-V hardware translation units embedded in the decode pipeline. Intel (China) Research Center filed a RISC-V processor with a hardware translation module and translation cache mapping unsupported instructions to micro-operations at the decode stage (2026, CN). Shanghai Xinlijii Semiconductor filed a processor enabling hardware-level instruction set arbitration for seamless x86/RISC-V switching on a single MCU without software translation overhead (2025, CN). This cluster directly targets the Windows application ecosystem compatibility gap.
AI/ML-Targeted Hardware-Aware Compiler Infrastructure
Guangdong Saiboan Intelligent Technology’s hardware-aware multi-layer IR compiler patents (2025, CN) introduce a three-tier computing abstraction — SPU/VPU/MPU — that is aware of the cache hierarchy at compile time, bridging RISC-V ISA extensibility with practical ML workload deployment. Tsinghua University’s FHE-compatible processor (2025, CN) complements this by enabling in-situ encrypted computation cores to minimize data movement. The Institute of Software, CAS, further filed a scalable OS for RISC-V architecture extension instruction sets (2024, CN) to provide OS-level scaffolding for custom ML accelerators.
RISC-V Core Approaches Compared: In-Order vs. Out-of-Order Pipeline Design
Click any row to explore further.
| Dimension | In-Order Pipeline (e.g. Ibex/IoT Cores) | Out-of-Order / Superscalar (e.g. Jinan Univ. Low-Power OOO) |
|---|---|---|
| Target Application | Embedded control, IoT, deterministic real-time (e.g. Ibex on SKY130 PDK for low-latency ASIC) | Autonomous driving edge computing, real-time constraints with higher throughput (Jinan University, 2025, CN) |
| Pipeline Complexity | Five-stage in-order pipeline; simple and deterministic execution order | Hybrid in-order/out-of-order microarchitecture balancing low power against execution efficiency |
| Power Profile | Near-threshold (NT) operation targeted; minimal dynamic power | Low-power single-issue out-of-order; power-performance tradeoff managed via hybrid approach |
| Area / Cell Count | ~31k standard cells at 58% utilization, zero DRC violations (Dr. Girish H, 2026, IN) | Not specified in dataset for OOO design; patent focused on method rather than tapeout metrics |
| ISA Extension Support | Configurable; supports custom instruction attachment (e.g. Posit FPU via F extension slot, 2021 literature) | Designed for real-time constraint compliance; custom extension integration not explicitly detailed in retrieved records |
| Key Filing / Evidence | Dr. Girish H (2026, IN) — Ibex-based ASIC; Jiangsu Jinzhi model-driven core generation (2023, CN) | Jinan University patent (2025, CN) — Low-Power Single-Issue Out-of-Order Execution RISC-V Processor |
| Jurisdiction | IN, CN | CN |
Frequently Asked Questions: RISC-V Processor Core Patents 2026
China (CN) dominates with approximately 80% of patent filings in the retrieved dataset, followed by India (IN) and the United States (US). No European Patent Office (EP), Japanese (JP), or Korean (KR) filings appear in this dataset.
Shandong Inspur Science Research Institute Co., Ltd. leads with 5 patents filed in 2024–2025, covering real-time thread scheduling, bus systems, ultra-wide RISC-V long vector processors, and dual-ISA operation.
The RISC-V H-extension enables hardware-assisted virtualization, supporting hypervisor and mixed-criticality system deployment. In the dataset, it appears in production-grade patent claims covering VM migration using Byzantine consensus (Shenzhen Lulin Technology, 2026), direct guest interrupt injection, and software-only partitioning (VOSySmonitoRV, 2021).
Four forward directions are identified from 2025–2026 filings: (1) hardware-level x86/RISC-V ISA bridge architectures targeting Windows ecosystem compatibility; (2) AI/ML-targeted hardware-aware multi-layer IR compilers; (3) adaptive multi-core cache coherency protocols addressing scalability beyond 8 cores; and (4) security/privacy-preserving compute including FHE processors and RDMA via extended instructions.
According to the strategic implications section of the dataset, the highest filing density clusters around custom instruction integration, vector extension co-design, and dynamic reconfiguration — not baseline pipeline improvements. This makes the RISC-V ‘X’ extension space and RVV implementation claims the primary focus for freedom-to-operate analysis.
The Ara vector processor achieved 1 GHz+ operation in 22nm FD-SOI technology. The New Ara open-source RVV 1.0 implementation (2022 literature) achieves 15% better area and 6% improved throughput over older RVV implementations with FPU utilization exceeding 98.5%. Alibaba Innovation Private Limited filed a RVV SoC patent in the US in 2024 targeting high-performance SoC integration.