Company patents

KLA Corporation

KLA Corporation's patent strategy reveals a strong, consistent focus on its core areas of Material & Chemical Analysis (27.9% of portfolio) and Photolithography (26.3%), with Photolithography showing a significant 28.3% YoY growth in 2024. While many categories show a decline in patenting activity so far in 2026, the company demonstrated an emerging focus on Machine Learning & AI, which experienced a remarkable 150.0% YoY growth in 2025, and Computer Vision, which grew by 75.0% YoY in 2025, indicating a strategic push into advanced computing applications despite their smaller share of the overall portfolio.

Patent Trend by Technology Area

Yearly patent publications since 2023

Product themes

Product-level themes inferred from filings since 2023, with category chips showing where each theme appears. Select a theme to filter the patents below.

735 US filings (since 2023) · 12 categories · 31 themes

Optical & Image-based Metrology

Utilizing optical systems, cameras, and image processing algorithms for precise measurement of physical dimensions, alignment, defects, and features on semiconductor wafers or packages.

Semiconductor Testing
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372since 2023
+17.1%YoY
Lithography Metrology & Inspection

Techniques and apparatus for measuring critical dimensions, overlay accuracy, defect detection, and surface topography in lithographic processes, often involving optical, laser, or charged particle beams.

Photolithography
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360since 2023
-8.5%YoY
Ion Implantation Control & Metrology

Methods and apparatus for precise wafer positioning, ion beam uniformity, and dose monitoring during ion implantation processes in semiconductor device manufacturing.

Electron / Ion Tubes & Discharge
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183since 2023
-26.9%YoY
Automated Visual Inspection

Systems that employ imaging and image processing to automatically detect defects, verify states, or ensure quality control in manufactured goods, printed materials, or industrial processes.

Material & Chemical Analysis
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103since 2023
+77.3%YoY
Wafer Handling and Process Environment Control

Systems and methods for automated substrate transport, precise positioning, temperature regulation, and chamber environment management to ensure process stability, uniformity, and yield in semiconductor manufacturing.

Semiconductor Manufacturing Process
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95since 2023
+15.4%YoY
Optical 3D Surface Metrology

Techniques and systems for measuring three-dimensional shapes, depths, or surface profiles using optical principles, including diffraction, interferometry, structured light, and imaging.

Length / Distance Measurement
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81since 2023
+7.7%YoY
In-situ Process Monitoring

Techniques and systems for real-time or near-real-time measurement and adjustment of semiconductor manufacturing parameters (e.g., temperature, etch rate, ion beam uniformity) to ensure process quality and consistency.

Semiconductor Testing
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75since 2023
+47.1%YoY
Charged Particle Beam Optics

Techniques and devices for generating, shaping, focusing, and deflecting electron or ion beams, often involving multi-pole lenses, deflectors, and aberration correction for applications like microscopy or processing.

Electron / Ion Tubes & Discharge
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59since 2023
-43.5%YoY
Advanced Material Characterization

Techniques and systems for precisely measuring electrical or electromagnetic properties of materials or components, often involving specialized resonators, waveguides, or multi-range measurement systems to ensure accuracy.

Semiconductor Testing
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45since 2023
+46.2%YoY
Wafer Bonding & Stacked Device Inspection

Inspection and testing methods specifically designed for wafers before, during, or after bonding processes, including verification of bonding surfaces, alignment, and defect detection in multi-wafer or stacked die assemblies.

Semiconductor Testing
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39since 2023
0.0%YoY
RF Plasma Power Delivery

Systems and methods for delivering radio frequency (RF) power to plasma processing chambers, including impedance matching, pulse shaping, and feedback control for stable and efficient plasma generation.

Electron / Ion Tubes & Discharge
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32since 2023
-69.2%YoY
Plasma Process Chamber Engineering

Design and control of plasma processing chambers, including heating, gas delivery, electrode configurations, and magnetic field control for uniform and efficient material processing in semiconductor manufacturing.

Electron / Ion Tubes & Discharge
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27since 2023
-60.0%YoY
EUV Lithography Systems

Components, processes, and methods specifically designed for Extreme Ultraviolet (EUV) lithography, including light sources, reflective optics, masks, pellicles, and contamination control mechanisms.

Photolithography
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26since 2023
+40.0%YoY
Substrate Patterning & Processing

Methods and equipment for applying photoresist uniformly onto wafers, forming patterns through various exposure techniques (e.g., direct imaging, multi-exposure), and integrating patterned layers into semiconductor structures or packaging.

Photolithography
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26since 2023
-36.4%YoY
Advanced Mask Technologies

Innovations in the design, materials, and manufacturing of lithography masks, including reflective masks, programmable masks, and defect mitigation strategies, to enable finer feature patterning and process control.

Photolithography
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16since 2023
+75.0%YoY
Advanced Optical Imaging & Lens Design

Development of sophisticated optical lens assemblies and computational methods to achieve high-resolution, precise, or specialized imaging, often for medical or scientific applications.

Optical Elements & Systems
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14since 2023
-25.0%YoY
Advanced Etching & Patterning Controlfiltered

Techniques for precise material removal, pattern shaping, and controlling etch selectivity or uniformity, often involving plasma, wet chemistry, or directed beams to achieve desired features on semiconductor substrates.

Semiconductor Manufacturing Process
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13since 2023
0.0%YoY
Precision Motion Metrology

Systems and methods for accurately measuring and compensating for position, orientation, and movement errors in mechanical systems, often for manufacturing, robotics, or optical alignment.

Length / Distance Measurement
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12since 2023
+100.0%YoY
Vacuum System & Chamber Evacuation

Techniques and apparatus for achieving and maintaining vacuum conditions within charged particle and plasma processing chambers, including pump control, vacuum degree monitoring, and chamber sealing.

Electron / Ion Tubes & Discharge
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12since 2023
+33.3%YoY
Temporary Wafer Bonding & Debonding

Methods for temporarily attaching a wafer or substrate to a carrier for thinning, dicing, or other processing, followed by controlled debonding, often using light-sensitive resins, temporary adhesives, or roughened interfaces.

Semiconductor Manufacturing Process
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12since 2023
-25.0%YoY
AI/ML for Optical Data Analysis

Application of machine learning models and algorithms to interpret complex optical sensor data for tasks such as object classification, anomaly detection, health monitoring, or environmental state determination, enhancing automation and decision-making.

Photometry / Spectrometry
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10since 2023
new
Advanced Optical Sensor Components

Innovations in the physical design, materials, fabrication, or packaging of photodetectors and optical sensor elements, including thermoelectric, NIR-compliant, and self-mixing interference types, to improve performance or integration.

Photometry / Spectrometry
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10since 2023
-50.0%YoY
Metasurface & Diffractive Optics

Engineering of artificial subwavelength structures (meta-atoms) to create metasurfaces that manipulate light properties (phase, polarization, wavelength) for multi-functional optical devices.

Optical Elements & Systems
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10since 2023
+100.0%YoY
AM Process Monitoring & Control

Systems and methods for real-time sensing, modeling, and closed-loop control of additive manufacturing parameters to ensure part quality, consistency, and process efficiency. This includes thermal management, atmospheric regulation, and precise material deposition.

Industrial Control Systems
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9since 2023
-66.7%YoY
Remote & Wireless Industrial Control

Systems and methods enabling the monitoring, configuration, and operation of industrial equipment and processes from a distance, often utilizing wireless communication protocols and networked platforms for enhanced flexibility and access.

Industrial Control Systems
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7since 2023
+100.0%YoY
Quantum Machine Learning

Developing and applying machine learning algorithms that leverage quantum computing principles, such as quantum circuits or autoencoders, for tasks like simulation or data processing.

Machine Learning & AI
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3since 2023
new
MLOps & Model Deployment

Systems and methods for automating the lifecycle of machine learning models, including pipeline deployment, model management, versioning, and configuring for different inference environments.

Machine Learning & AI
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2since 2023
new
Multi-Modal Process Monitoring

Integrated systems that combine multiple types of measurements (e.g., dimensional, thermal, strain, flow) to monitor and control industrial processes, structural integrity, or product quality.

Length / Distance Measurement
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2since 2023
new
Wearable Display Optics

Optical systems and components specifically designed for head-mounted displays, augmented reality (AR) glasses, and virtual reality (VR) headsets, focusing on image projection, waveguide integration, and display durability.

Optical Elements & Systems
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1since 2023
new
AI for Medical Diagnostics

Utilizing machine learning, particularly deep learning, to analyze medical data such as images, sensor readings, or physiological signals for disease prediction, diagnosis, or treatment assessment.

Image ProcessingComputer Vision
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1since 2023
new
Advanced Biomarker Detection Assays

Methods and compositions for identifying, quantifying, or characterizing specific biological molecules (e.g., nucleic acids, proteins, metabolites, antibodies) or microbial species, often for diagnostic, prognostic, or quality control applications.

Material & Chemical Analysis
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1since 2023
n/a

Patents

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