Photonics and optics patents

What can be protected

• Devices and componentsLasers, modulators, detectors, waveguides and other electro-optical devices.
• Integrated photonicsPhotonic integrated circuits, coupling and packaging.
• LIDAR and optical sensingSystem architectures, beam steering, and signal processing tied to the hardware.
• Materials and fabricationNew materials, thin films and manufacturing processes.
• Optical systemsOptical interconnects, photonic computing and quantum photonics. See quantum computing patents.

Where patents in this field go wrong

1. Patenting what you cannot police

   Fabrication processes are hard to detect in a competitor’s product. Some are better kept as trade secrets; device features that can be seen or measured usually suit patents.

2. Claims tied to one geometry

   Claims that recite exact dimensions or one layout are easy to design around. Good applications describe the principle and a range of implementations.

3. Filing only where you sell

   Photonics components are often made abroad. Coverage should include where products are manufactured as well as where they are sold.

4. Conference disclosures

   Talks, posters and abstracts can be public disclosures. File before you present.

Building a photonics portfolio

1. Start with the device

   Claim the structure that delivers the performance: the waveguide geometry, the modulator design or the coupling scheme.

2. Add the system

   Claims to the module or system, such as a transceiver or a LIDAR unit, reach the companies that sell finished products, which are often the most practical parties to license.

3. Cover how it is used

   Method claims to operating the device, such as a calibration or beam-steering sequence, give another route to reach products built from other suppliers’ parts.

4. Settle ownership with the foundry

   If a foundry or partner makes your chips, make sure the agreements say who owns improvements made during process development.

How I work

I work through the physics with your engineers first, then decide with you what to patent, what to keep confidential, and where to file. See how I work.

Representative experience

Matters are described in general terms to protect client confidentiality.

• Patent prosecution counsel for a research university’s silicon photonics portfolio

Questions

Should we patent a fabrication process or keep it secret?

If a competitor’s use of the process would be hard to detect, a trade secret may protect it better and for longer. If the process leaves visible or measurable traces in the product, a patent is often the stronger choice.

Where should a photonics company file outside the United States?

Usually where competitors manufacture and where your main markets are. An international (PCT) application filed within 12 months of your first filing keeps those options open for about 30 months.

Can we patent an improvement to an existing component?

Yes, if the improvement is new and not obvious. Many valuable photonics patents cover a better version of a known device rather than an entirely new one.

Can we patent a design we fabricate at a commercial foundry?

Yes. Using a foundry’s standard process does not prevent you from patenting your device design, as long as the design itself is new and not obvious. Check the foundry agreement for terms on ownership of improvements.

Is software that controls an optical system patentable?

It can be, if it produces a concrete technical result, such as faster beam steering, better signal-to-noise ratio or more accurate calibration. Claims should tie the software to the optical hardware rather than describe an abstract calculation.

How long does it take to get a U.S. photonics patent?

Examination usually takes two to three years from filing. Prioritized examination (Track One) is available for an additional fee and aims for a final decision within about a year.

Should we also file in Europe and Asia?

If competitors manufacture in Asia or your customers are in Europe, foreign filings can matter as much as U.S. ones. An international (PCT) application keeps those options open for about 30 months from your first filing while you learn where the market is.