Siemens EDA Brand Guidelines: From Mentor Graphics in Oregon to a Siemens Software Unit

Three Tektronix engineers start a software company.

Siemens EDA began as Mentor Graphics, founded in Oregon in 1981 by Tom Bruggere, Gerry Langeler and Dave Moffenbeier, all formerly of the instrument maker Tektronix, according to English Wikipedia. The company made its home in Wilsonville, south of Portland, and went public in 1984.

Mentor’s early bet was on hardware it did not build. Wikipedia says its software ran only on Apollo workstations, while rivals of the time such as Daisy and Valid built their own computers; by the late 1980s, Wikipedia adds, the whole industry had moved to general-purpose workstations from makers such as Apollo and Sun Microsystems. Mentor’s first product, the IDEA 1000, was introduced at the 1982 Design Automation Conference — shown, Wikipedia notes, in a suite rather than on the exhibition floor.

The company built its business in electronic design automation, or EDA: the software engineers use to design, simulate and check integrated circuits and printed circuit boards. Over the years it also built up embedded software, including the Nucleus real-time operating system it gained by buying Accelerated Technology in 2002, and thermal and fluid-flow tools for cooling electronics. Wikipedia lists product development in countries including the United States, Taiwan, Egypt, Poland, Hungary, Japan, France, India and Armenia.

Calibre, Questa, Veloce and the board tools.

Several Mentor product names have outlived the Mentor name. Calibre is a family of tools for checking chip layouts before manufacture, including design-rule and layout-versus-schematic checks; Aprisa handles place-and-route for digital chips. For verification, ModelSim and Questa simulate hardware designs — Wikipedia describes ModelSim as aimed at smaller ASIC and FPGA work and QuestaSim at complex FPGAs and systems-on-chip — and the Veloce family emulates whole designs in hardware before they are made.

On the board side, Xpedition, PADS, HyperLynx and Valor cover schematic capture, layout, signal analysis and the hand-off to manufacturing. Other lines reach beyond electronics: Capital and VeSys for vehicle wiring harnesses, and the Flotherm and FLOEFD fluid-dynamics tools, now sold under Siemens’ Simcenter name.

Much of that range was bought rather than built. Wikipedia traces the VRTX real-time operating system to Mentor’s purchase of Microtec Research in 1995, the BridgePoint modelling tools to Project Technology in 2004, the Sourcery CodeBench and GNU toolchains to CodeSourcery in 2010, and the Flomaster pipe-flow simulator to Flowmaster in 2012. For programmable chips there is Precision Synthesis, which turns hardware descriptions into FPGA designs, and the company also sold IP cores for ASIC and FPGA work. Its embedded Linux supported ARM, MIPS, Power and x86 processors, Wikipedia says. The result was a catalogue that ran from transistor-level layout checks to the wiring looms in cars.

Today Siemens describes the unit as providing “a comprehensive portfolio” of EDA software, hardware and services “for the design, verification and manufacturing of integrated circuits (ICs) and electronic systems.” Its own pages put weight on 3D IC packaging, on hardware and software designed together, and on AI, presenting what it calls the Fuse EDA AI Agent; these are the company’s descriptions of its own direction.

How chip-design companies present themselves.

Chip-design software and semiconductor IP are hard things to picture. The products are programs, licences and blocks of circuitry that customers place inside their own chips, so the companies that sell them have to borrow images from the work itself. The most common is the chip floor-plan: a die seen from above, its functional blocks lit in bright colour, or the stacked metal routing layers of a layout drawn as glowing lines on a dark ground.

Abstract circuit lines do much of the remaining work. Thin traces, right-angled paths and grids of contact points stand in for a product that no one can hold, and they travel easily from a website banner to a trade-show wall. Alongside them come pictures of people at work: engineers in front of multi-monitor layouts, waveforms and schematics on the screens, the design shown in progress rather than finished.

The trade has its own stages. The Design Automation Conference is where, according to English Wikipedia, Mentor Graphics introduced its first product in 1982, and booths there and at the RISC-V Summit carry the same chip renders, circuit patterns and demonstration screens. Keynote stages follow a familiar pattern too: a chief executive in front of a roadmap slide, with process nodes, product generations and partner names set out across the screen.

This guide looks past those shared images to what can be checked about each company: who founded it, who owns it now, which tools or IP it is known for, and which events in its history — mergers, takeovers, export-control cases — shaped the name it trades under. Where a claim rests only on a company’s own word, we say so.

A takeover, a new name and a parent with a long past.

Mentor stayed independent for more than three decades. In June 2008 Cadence Design Systems offered to buy it; English Wikipedia says Cadence withdrew the offer on 15 August 2008, citing difficulty raising the money and Mentor’s unwillingness to discuss it.

The buyer, in the end, was Siemens. Siemens announced the deal on 14 November 2016, and on 30 March 2017 the industry analyst firm Schnitger Corporation reported that the acquisition had closed, with Mentor joining the Siemens PLM Software business unit within the Digital Factory division. Wikipedia says that under the terms of the deal Mentor kept its Wilsonville headquarters and its workforce, and traded for a time as “Mentor, a Siemens Business.”

The Mentor name went next. On 15 December 2020 EE Times reported that, from January 2021, the Mentor division would be known as Siemens EDA, continuing within Siemens Digital Industries Software; the change was announced in a blog by Joe Sawicki, the executive vice president for IC-EDA. The Mentor Graphics name has not been used for the business since.

Siemens EDA has also been caught up in US trade rules. In late May 2025 Synopsys, Cadence and Siemens EDA were ordered to halt exports of EDA tools to China, and on 4 July 2025 Design & Reuse reported that the US Commerce Department’s Bureau of Industry and Security had notified the three companies that the restrictions were lifted.

Siemens EDA is a young name inside an old group. The parent company’s much longer history, which begins with Siemens & Halske in Berlin, belongs to Siemens itself rather than to the Oregon software business, and is covered in our Siemens guide.

For a design guide, Siemens EDA shows how an acquired company’s identity can be folded into a parent brand while its product names carry on. Compare Siemens, the parent group, and Cadence, the rival that once tried to buy Mentor. For this guide we use a deep teal, slate and grey with a sans, an unofficial interpretation; no product or logo is reproduced.

Keep Siemens EDA’s identity on hand — save it to a board in the Made Good inspiration library.