From the first days of the Impossible Burger, the company's plant-based heme ingredient — soy leghemoglobin — set it apart from all other competitors. Impossible Foods' heme gives its products a distinctly meaty taste, the company has said. It also makes the plant-based burgers "bleed" and appear pink in the middle when cooked.

Until last year, no other manufacturer making either plant-based meat products or ingredients had been able to make plant-based heme. Motif's Hemami, which received generally recognized as safe status by the FDA last year, became available as a standalone ingredient for manufacturers making plant-based meat in December.

As an ingredient company, Motif is concentrating only on making Hemami and other components to improve plant-based foods. It does not manufacture plant-based burgers, though it did make some for demonstration purposes at trade shows, and it partnered with the Coolgreens restaurant chain for consumer testing. The lawsuit says this is where the patent infringement lies: By selling its Hemami ingredient, Motif "has actively induced its business partners to make, use, sell, and/or offer for sale the Infringing Burger."

It's indisputable that Impossible Foods has been an inspiration for Motif FoodWorks. When Motif officially launched as a division of Ginkgo Bioworks in 2019, Ginkgo Co-founder and CEO Jason Kelly told CNBC that Impossible Foods' success drove his interest in creating an ingredients division.

An emailed statement from a Motif spokesperson refuted the claims made in the lawsuit.

"This complaint is not supported by facts or the law and is nothing more than a baseless attempt by Impossible Foods to stifle competition, limit consumer choice, and impede Motif, a new and innovative company with significant business momentum," the statement says. "We intend to contest these allegations vigorously and will respond through the appropriate legal channels. We will continue to pursue our go-to-market strategy and work towards our mission to bring better tasting, nutritious and sustainable foods to the world."

Hemami  isn't the only ingredient in Motif's portfolio. Last year, it launched texture enhancer Appetex and gained exclusive access to technologies that enhance fats in plant-based meat and texture in plant-based cheese. Enthusiasm about the work that Motif is doing has driven research partnerships as well as funding. According to Crunchbase , the company has received more than $344 million in investments, including a $226 million Series B round last year.

Motif is not the only other company to have developed a plant-based heme ingredient. Back of the Yards Algae Sciences, which works with spirulina microalgae, announced last year that it also had created a heme ingredient. The ingredient, which has not yet been introduced at large scale, is extracted from spirulina algae. Motif's Hemami is made through fermentation using yeast — the same process used by Impossible Foods.

From any angle, Impossible Foods is a formidable opponent. Its plant-based heme has helped it become one of the top companies in plant-based meat. The company is private and does not report sales figures, but it has seen recent growth and attracted massive investments, including a $500 million round last November that brought its lifetime funding to more than $2 billion.

Follow Megan Poinski on Twitter

Get the free daily newsletter read by industry experts

Topics covered: manufacturing, packaging, new products, R&D, and much more.

Earnings reports last week for Beyond Meat and Maple Leaf Foods showed flat or negative growth — and no clear way to jumpstart sales.

The alcohol and beverage space has rapidly transformed as consumers adopt new purchasing and drinking habits — and are met with a flurry of product options.

Subscribe to Food Dive for top news, trends & analysis

Topics covered: manufacturing, packaging, new products, R&D, and much more.

Get the free daily newsletter read by industry experts

Topics covered: manufacturing, packaging, new products, R&D, and much more.

Earnings reports last week for Beyond Meat and Maple Leaf Foods showed flat or negative growth — and no clear way to jumpstart sales.

The alcohol and beverage space has rapidly transformed as consumers adopt new purchasing and drinking habits — and are met with a flurry of product options.

The free newsletter covering the top industry headlines

Topics covered: manufacturing, packaging, new products, R&D, and much more.